Remote I/O Adapter Module Catalog Number 1747-ASB User Manual
Important User Information Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards.
Summary of Changes Summary of Changes The information below summarizes the changes to this manual since the last printing as Publication 1747-6.13 - December 1996. To help you find new information and updated information in this release of the manual, we have included change bars as shown to the right of this paragraph.
2 Summary of Changes Publication 1747-UM006B-EN-P - June 2003
Table of Contents Preface Who Should Use this Manual- . . . . . . . . . . . . . . . Purpose of this Manual . . . . . . . . . . . . . . . . . . . . Contents of this Manual . . . . . . . . . . . . . . . . . Related Documentation . . . . . . . . . . . . . . . . . Terms and Abbreviations. . . . . . . . . . . . . . . . . . . Common Techniques Used in this Manual . . . . . . Rockwell Automation Support . . . . . . . . . . . . . . . Your Questions or Comments on this Manual . . . . . . . . . . . . . . . . . .
ii Table of Contents Chapter 3 Addressing Chassis Overview . . . . . . . . . . . . . . . . . . . . . . . . . Slot Numbering. . . . . . . . . . . . . . . . . . . . . . . . . . . Addressing I/O Modules . . . . . . . . . . . . . . . . . . . . 2-Slot Addressing . . . . . . . . . . . . . . . . . . . . . . . 2-Slot Addressing Considerations . . . . . . . . . . . 2-Slot Addressing Examples . . . . . . . . . . . . . . . 1-Slot Addressing . . . . . . . . . . . . . . . . . . . . . . .
Table of Contents iii Chapter 5 Installation and Wiring European Union Direct Compliance. . . . . . EMC Directive . . . . . . . . . . . . . . . . . . . Installing the1747-ASB Module . . . . . . . . . Link Wiring. . . . . . . . . . . . . . . . . . . . . . . . Correct Link Wiring . . . . . . . . . . . . . . . Incorrect Link Wiring . . . . . . . . . . . . . . Link Termination . . . . . . . . . . . . . . . . . Wiring a Processor Restart Lockout Switch . I/O Module Addressing Labels. . . . . . . . . .
iv Table of Contents I/O Module Configuration Mismatch Fault Codes - Code 3 . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7 I/O Runtime Fault Codes - Code 4 . . . . . . . . . . . . . . . . 7-8 Chapter 8 Application Examples Basic SLC 500 Example Using and RIO Scanner RIO Device Configuration . . . . . . . . . . . . . SLC Processor Image . . . . . . . . . . . . . . . . . 1747-ASB Module Configuration Details . . . 1747-ASB Module I/O Mapping Details. . . . RIO Address Label Examples . . . . . . .
Preface Read this preface to familiarize yourself with the rest of the manual. This preface covers the following topics: • • • • • Who Should Use this Manual- who should use this manual the purpose of this manual terms and abbreviations conventions used in this manual Rockwell Automation support Use this manual if you are responsible for designing, installing, programming, or troubleshooting control systems that use Allen-Bradley small logic controllers.
2 Preface 4 Configuration Contains DIP switch information, and shows odd size chassis and image conditions. 5 Installation and Wiring Provides installation procedures and wiring guidelines. 6 Start-up and Operation Explains powerup and initialization sequences, normal operation, communication exceptions, remote expansion power loss, invalid RIO link transfers, and testing the 1747-ASB module. 7 Troubleshooting Shows how to interpret and correct problems with your 1747-ASB module.
Preface Information regarding the use of the 1747-SN SLC RIO scanner RIO Scanner User Manual 1747-6.6 Information regarding the use of analog modules with the SLC 500 system SLC 500 Analog I/O Modules User Manual 1746-6.4 Information regarding programming your BASIC module SLC 500 BASIC Language Reference 1746-RM001 In-depth information on grounding and wiring Allen-Bradley programmable controllers Allen-Bradley Programmable Controller Grounding and Wiring Guidelines 1770-4.
4 Preface does not receive communications from the scanner within a certain period of time. I/O Module - Any 1746 or 1747 I/O module that is supported by the 1747-ASB module. Local Expansion Chassis - A chassis that is connected to a local SLC chassis using a 1747-C9 (91.4 cm [36 in.]) or 1747-C7 (15.2 cm [6 in.]) cable. Local PLC Chassis - The 1771 chassis that contains a PLC processor and scanner. Local SLC Chassis - The chassis that contains the SLC processor and scanner.
Preface 5 RIO Block Transfer - The exchange of up to 64 words of data between the scanner and adapter. RIO block transfers only occur if you program them in your processor control program. The 1747-ASB module supports a block transfer of up to 8 words. RIO Discrete Transfer - The exchange of image data between the scanner and adapter. RIO discrete transfers occur continuously whenever the scanner and adapter are communicating on the RIO link.
6 Preface Rockwell Automation Support Before you contact Rockwell Automation for technical assistance, we suggest you please review the troubleshooting information contained in this publication first. If the problem persists, call your local Rockwell Automation representative or contact Rockwell Automation in one of the following ways: Phone Internet United States/Canada 1.440.646.5800 Outside United States/Canada You can access the phone number for your country via the Internet: 1.
Chapter 1 Overview This chapter presents: • • • • • 1747-ASB Module Overview 1747-ASB module overview remote I/O overview compatible devices 1747-ASB module features setup and operational overview The 1747-ASB module is an SLC 500 single-slot, RIO communication link module. It occupies the first slot (slot 0) of a 1746 remote chassis, where the SLC processor normally resides.
1-2 Overview To better understand the use of the 1747-ASB module, you should have an understanding of the RIO link. The RIO link is an Allen-Bradley communications system supporting high-speed transfer of control information. An RIO link consists of a single master device and one or more slave devices. The master device is referred to as the scanner. The slave devices are referred to as adapters (such as the 1747-ASB module).
Overview 1-3 1747-ASB Module Processor Scanner RIO Discrete Transfers with Adapter 1 Remote Chassis Remote Expansion Chassis SLC Local Chassis RIO Link RIO Discrete Transfers with Adapter 2 RediPANEL 1747-ASB Module RIO Discrete Transfers with Adapter 3 Remote Chassis Remote Expansion Chassis RIO Discrete Transfers with Adapter 4 RediPANEL 1747-ASB Module Processor/Scanner RIO Discrete Transfers with Adapter 1 PLC Local Chassis RIO Link Remote Chassis Remote Expansion Chassis RIO Discrete Transfe
1-4 Overview Scanner I/O Image Division The scanner allows each adapter to use a fixed amount (user defined) of the scanner's input and output image. Part of the processor's image is used by local I/O, the other portion is used by the scanner for remote I/O. For a PLC-5, logical rack 0 is dedicated for local I/O. The scanner's remote I/O image is divided into logical racks and further divided into logical groups. A full logical rack consists of eight input and eight output image words.
Overview Scanner Input or Output Image Bit Number (Octal) Bit Number (Decimal) Logical Rack 0 Logical Rack 1 17 10 7 0 15 8 7 0 Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Scanner Input or Output Image Bit Number (Octal) Bit Number (Decimal) Adapter Image Logical Rack 0 Logical Rack 1 Adapter image is 12 logical groups in size and crosses a logical rack boundary due to its size.
1-6 Overview The adapter may receive different communication commands for each logical device. In this case, the adapter decides which command it responds to. Scanner Input or Output Image In this example, two RIO discrete transfers are required for the scanner to update the adapter image containing two logical devices.
Overview 1-7 RIO block transfers are initiated by a special command from the PLC processor, typically when large amounts of data must be exchanged with one specialty I/O module. Block transfers use the basic RIO discrete transfer mechanism of the RIO link. However, the actual transfer of data occurs asynchronous to the discrete transfers. It is possible for several discrete transfers to occur before a block transfer is processed.
1-8 Overview Physical and Logical RIO Link Specifications The maximum number of adapters that your scanner can communicate with is determined by the scanner and adapter's physical and logical specifications, as described below: Physical Specifications are the maximum number of adapters that can be connected to the scanner. For more information, see Extended Node Capability below.
Overview 1-9 Compatible RIO Scanners Refer to the appropriate scanner manual for details concerning physical and logical specifications. Catalog Number Description 1771-SN(1) Sub I/O scanner for Mini-PLC®-2 and PLC-5 families 1785-L11B(2) PLC-5/11™ (in scanner mode) 1785-L20B(2) PLC-5/20™ (in scanner mode) 1785-L30x(2) PLC-5/30™ (in scanner mode) 1785-L40x(2) PLC-5/40 (in scanner mode) 1785-L60x(2) PLC-5/60™ (in scanner mode) 1747-SN(2)(3) SLC Remote I/O Scanner (1) Revision D or later.
1-10 Overview Compatible Modules The 1747-ASB module supports all SLC 5/01 compatible I/O modules (class 0 and 1).
Overview 1-11 Hardware Features The 1747-ASB module's hardware features are highlighted below. Detailed installation, operation, and troubleshooting information is contained in chapters 5, 6, and 7.
1-12 Overview • Baud Rate (Baud Rate) - is the 1747-ASB module's RIO link communication rate. The baud rate must be the same for all adapters on the RIO link. • Primary/Complementary SLC Chassis (PRI/COMP) determines whether the 1747-ASB module appears to the scanner as a primary or complementary chassis. • Adapter Image Size (IMAGE SIZE) - indicates the I/O image size to be reserved for the adapter. It can be any size between 2 and 32 groups in two logical group increments.
Overview 1-13 RIO Link and Processor Restart Lockout Connector The 6-pin male connector attaches the 1747-ASB module to the RIO link and processor restart lockout device. Door Label The door label provides DIP switch and wiring information. Self-Locking Tabs Self-locking tabs secure the module in the rack. No tools are necessary to install or remove a module. Cable Tie Slots Cable tie slots can be used to secure the wiring cable to the module.
1-14 Overview Publication 1747-UM006B-EN-P - June 2003
Chapter 2 Quick Start for Experienced Users This chapter helps you to get started using the 1747-ASB module. We base the procedures here on the assumption that you have an understanding of PLC and SLC 500 products, as well as the RIO link. You should understand electronic process control and be able to interpret the ladder logic instructions required to generate the electronic signals that control your application.
2-2 Quick Start for Experienced Users Procedures 1. Check the contents of shipping box. Reference Unpack the shipping box making sure that the contents include: • Remote I/O adapter module (Catalog Number 1747-ASB) • user manual (Publication 1747-6.13) If the contents are incomplete, call your local Rockwell Automation representative for assistance. - 2. Reference Ensure your chassis supports placement of the 1747-ASB module.
Quick Start for Experienced Users SW1 SW1 O N 1 2 3 4 5 6 7 8 ON OFF Logical Rack Number Bit 5 (MSB) Logical Rack Number Bit 4 Logical Rack Number Bit 3 Logical Rack Number Bit 2 Logical Rack Number Bit 1 Logical Rack Number Bit 0 (LSB) Logical Group Number Bit 1 (MSB) Logical Group Number Bit 0 (LSB) Logical Rack Number For details, see page 4-2. Logical Group Number 7 ON ON OFF OFF 8 ON OFF ON OFF Group 0 (default) 2 4 6 2 ON OFF ON OFF Baud Rate 57.6K (default) 115.2K 230.
2-4 Quick Start for Experienced Users 5. Insert the 1747-ASB module into the chassis. ATTENTION ! Never insert, remove or wire modules with power applied to the chassis or devices wired to the module. Reference Chapter 5 (Installation and Wiring) Make sure system power is off; then insert the adapter module into slot 0 of your 1746 chassis. Module Release Card Guide 6. Connect all RIO link devices. Ensure that you: • Daisy chain each RIO link device.
Quick Start for Experienced Users 7. (Optional) Wire a processor restart lockout switch. ATTENTION ! 2-5 Reference Cycling power on any 1747-ASB module chassis removes the processor restart lockout condition (SW-2) by reinitializing the 1747-ASB module. Chapter 5 (Installation and Wiring) Use a momentary switch (Class 1, Division 2) to short terminals IN and RET together. Important: Do not connect anything to the NC (No Connect) terminal.
2-6 Quick Start for Experienced Users 9. If using a PLC processor as a master, attach the octal labels. The octal filter and door labels must be used when working with a PLC processor as a master. A list of I/O modules that include an octal label kit can be found on page 5-8. Adhere the octal labels over the existing decimal labels, as shown below.
Quick Start for Experienced Users 11. Check that the module is operating correctly. Reference During normal operation (PLC or SLC in Run mode), the 1747-ASB module appears as shown below: ADAPTER Status display indicates a run condition. Chapter 6 (Start-Up and Operation) Chapter 7 (Troubleshooting) COMM F AULT Green COMM LED is on. 2-7 Red F AULT LED is off.
2-8 Quick Start for Experienced Users Publication 1747-UM006B-EN-P - June 2003
Chapter 3 Addressing This chapter presents: • slot numbering • 2-slot, 1-slot, and 1/2-slot addressing • how I/O module images are mapped The 1747-ASB module controls 1 remote chassis and up to 2 remote expansion chassis with a maximum of 30 slots. Currently, there are four different types of chassis available.
3-2 Addressing IMPORTANT A 1747-ASB module fault occurs if the remote expansion chassis are not powered. Catalog Number 1746-C9 36 inch cable Catalog Number 1746-P1 Remote Chassis Remote Expansion Chassis Catalog Number 1746-P3 Catalog Number 1746-C7 Catalog Number 1746-P2 Remote Chassis 6 inch cable Remote Expansion Chassis Catalog Number 1746-P2 Slot Numbering The 1747-ASB module is capable of controlling 30 slots.
Addressing 3-3 Slot addressing refers to how each chassis slot is assigned a specific amount of the 1747-ASB module image. The amount depends on which type of slot addressing you choose; 2-slot, 1-slot, and 1/2-slot addressing is available, as shown below: IMPORTANT 2-Slot Addressing Due to SLC and PLC addressing differences, when the 1747-ASB module is used with an SLC processor, the image bit numbers are 0 to 7, 8 to 15 decimal.
3-4 Addressing 2-Slot Addressing When the 1747-ASB module is configured for 2-slot addressing, the processor addresses two chassis slots as one logical group. Each slot, beginning with slot 1, is sequentially assigned one byte (8 bits) of the 1747-ASB module's input and output image. Each terminal on a discrete I/O module installed in a slot is assigned a bit within the byte, beginning with the least significant bit.
Addressing 3-5 To accommodate modules that require up to one word (16 bits) of input and/or output image, the 1747-ASB module pairs slots beginning with slot 1 (i.e., slot 1 is paired to slot 2, etc.). Slot pairing combines the low and high byte into a one word input and output image. This maximizes I/O image space, allowing you to install an input module in one slot and an output module in the other, each using up to 16 bits of the paired input and output images.
3-6 Addressing 2-Slot Addressing Examples The following example illustrates how to map modules requiring: • one byte or less of input or output image • one word of input or output image I I = Input Module O = Output Module I I O 1746 Slot Numbering 0 Slot Pair 1 2 O 3 1 4 2 I O 5 6 I I O 7 3 Modules Requiring One Byte In this example, the modules require one byte of input or output image.
Addressing 3-7 1-Slot Addressing When the 1747-ASB module is configured for 1-slot addressing, the processor addresses one chassis slot as one logical group. Each slot, beginning with slot one, is sequentially assigned one word (16 bits) of the 1747-ASB module's input and output image. Each terminal on the I/O module is assigned a bit within the word, beginning with the least significant bit.
3-8 Addressing I When a module is installed in slot 1 that requires both words of input image, slot 1 uses the input image normally assigned to slot 2. Slot 2, therefore, cannot use any of its input image. However, slot 2 can now use the output image normally assigned to slot 1, because slot 1 is not using it.
Addressing 3-9 1-Slot Addressing Examples The following example illustrates how to map modules requiring: • one word of input or output image • more than one word of input or output image I I I O I = Input Module O = Output Module 1746 Slot Numbering 0 1 2 O 3 Slot Pair 1 4 2 I O 5 I I 6 7 3 8 I O O 9 10 4 11 12 5 Modules Requiring One Word I O 13 6 I O O O 14 15 16 17 18 8 9 7 Modules Requiring More Than One Word In the example below, the modules require one
3-10 Addressing 1/2-Slot Addressing When the 1747-ASB module is configured for 1/2-slot addressing, the processor addresses one chassis slot as two logical groups. Each slot, beginning with slot one, is sequentially assigned two words (32 bits) of the 1747-ASB module's input and output image. Each terminal on the I/O module is assigned a bit within the word, beginning with the least significant bit.
Addressing I O 3-11 With slot pairing, when a module is installed in slot 1 that requires all four words of the input image, slot 1 uses the input image normally assigned to slot 2. Slot 2, therefore, cannot use any of its input image. However, slot 2 can now use the output image normally assigned to slot 1, because slot 1 is not using it.
3-12 Addressing 1/2-Slot Addressing Examples The following example illustrates how to map modules requiring: • two words of input or output image • more than two words of input or output image I I I O 1746 Slot Numbering 0 Slot Pair 1 I O 2 3 1 O 4 5 2 6 3 O 7 I = Input Module O = Output Module 8 4 Modules Requiring Two Words Modules Requiring More Than Two Words In the example below, the modules require two words of input or output image.
Addressing How I/O Module Images Are Mapped 3-13 The method of transferring an I/O module's image to the 1747-ASB module's image is referred to as image mapping, or mapping. An I/O image can be discretely mapped or block transfer mapped. How the module's image is mapped depends on the type of module you are using (discrete or specialty I/O). The following table lists all of the different types of I/O modules currently supported by the 1747-ASB module.
3-14 Addressing Processor/Scanner Backplane transfer from a 4-point discrete input module to the 1747-ASB module image.
Addressing 3-15 The scanner and 1747-ASB module process a maximum of one RIO block transfer per logical device per RIO scan. If you wish to perform four RIO block transfers for a logical device, at least four RIO scans are required to complete these RIO block transfers. The 1747-ASB module can block transfer up to a maximum of 8 words per block transfer. 1747-ASB module exchanges data with the speciality I/O module via the backplane.
3-16 Addressing When discrete mode is selected, specialty I/O modules are discretely mapped or block transfer mapped, depending on: • the specialty I/O module's image size • the addressing mode selected (2-slot, 1-slot, or 1/2-slot) When discrete mode is selected, a specialty I/O module is discretely mapped if its image fits into the image space assigned to its slot pair.
Addressing 3-17 The following table provides the specialty I/O module mapping used when discrete mode is selected. Max.
3-18 Addressing Publication 1747-UM006B-EN-P - June 2003
Chapter 4 Configuration This chapter presents the configuration options made through the various DIP switch settings. DIP Switch Information The 1747-ASB module parameters are configured by three DIP switches, shown below. To assist you in the configuration of multiple 1747-ASB modules, a configuration worksheet is provided in Appendix C.
4-2 Configuration O N DIP Switch SW1 1 2 3 4 5 6 7 SW1 Logical Rack Number Logical Rack Number (SW1-1 through 6) 8 Logical Group Number O N SW1 switches 1 through 6 assign the 1747-ASB module a starting logical rack number in the scanner's image.
Configuration Logical Rack Number (Octal) 1747-SN PLC 2 PLC 3 PLC 5/15 PLC 5/25 PLC 5/40 77 Switch Number (SW1) PLC 5/60 PLC 5/250 1 2 3 4 27 27 ON OFF ON OFF OFF OFF 30 30 ON OFF OFF ON ON ON 31 31 ON OFF OFF ON ON OFF 32 32 ON OFF OFF ON OFF ON 33 33 ON OFF OFF ON OFF OFF 34 34 ON OFF OFF OFF ON ON 35 35 ON OFF OFF OFF ON OFF 36 36 ON OFF OFF OFF OFF ON 37 37 ON OFF OFF OFF OFF OFF 40 OFF ON ON ON ON ON 41 OFF ON ON ON
4-4 Configuration Logical Group Number (SW1-7,8) O N SW1 switches 7 and 8 determine the starting logical group. 1 2 3 4 5 6 7 SW1 Logical Rack Number Valid starting logical group numbers are determined by the: 8 Logical Group Number O N 1 • addressing mode (2-slot, 1-slot, or 1/2-slot) • specialty I/O mode (discrete or block transfer) 2 Baud Rate 3 4 5 6 SW2 Primary/Complementary Chassis Reserved The default position is logical group zero as shipped from the factory.
Configuration 4-5 Baud Rate DIP Switch Settings SW2 SW2 SW2 1 1 1 1 2 2 2 2 3 4 5 6 3 4 5 6 3 4 5 6 3 4 5 6 7 7 7 7 8 8 8 8 115.2K O N O N O N O N 57.6K SW2 230.4K Invalid If the invalid switch setting is selected, a 1747-ASB module error occurs. Primary/Complementary Chassis (SW2-3) O N 1 2 7 Logical Group Number 8 3 4 5 6 SW1 Logical Rack Number SW2 switch 3 determines whether the 1747-ASB module appears to the scanner as a primary or complementary chassis.
4-6 Configuration ATTENTION ! Because the primary and complementary chassis images overlap, input and specialty I/O modules must never share the same image location. Inputs received by the scanner may be incorrect and RIO block transfers are not serviced properly. If an output module shares its output image with another output module, both output modules receive the same output information. If you want to use complementary I/O, two 1747-ASB modules are required.
Configuration 4-7 In addition, the 1747-ASB modules do not have to have to be controlling the same number of slots or type of chassis. IMPORTANT If a 1747-ASB module is configured as a primary chassis and as the last chassis, a 1747-ASB module error occurs. Only complementary chassis can be configured as last chassis. For information concerning last chassis selection, refer to page 4-19. Primary and complementary chassis cannot have the same logical rack number.
4-8 Configuration O I I O I O I O I O O I O I O I 4 7 I = Input Module O = Output Module Slot 0 1 2 3 1 Slot Pair 4 5 2 6 7 3 8 Slot 4 0 1 Slot Pair 2 1 Primary Chassis I/O Image Input Image from Primary Chassis Slot 1 Slot 1 Slot 2 Slot 2 Slot 3 Slot 3 Slot 4 Slot 4 Slot 5 Slot 5 Slot 6 Slot 6 Slot 7 Slot 7 Slot 8 Slot 8 7 7 0 0 Slot 1 Slot 1 Slot 2 Slot 2 Slot 3 Slot 3 Slot 4 Slot 4 Slot 5 Slot 5 Slot 6 Slot 6 Slot 7 Slot 7 Slot 8 Slot 8 1 2 Slot Pair 3 4 17 15
Configuration 4-9 O N Reserved (SW2-4) 1 2 3 4 5 6 7 SW1 Logical Rack Number SW2 switch 4 must remain in the ON position.
4-10 Configuration O N The 1747-ASB module image size can be between 2 and 32 logical groups, in 2 logical group increments.
Configuration 4-11 If after assigning your 1747-ASB module image size, you exceed logical rack 62 in complementary mode (SW2 switch 3) or logical rack 7 in primary mode (SW2 switch 3), an error occurs.
4-12 Configuration The following examples illustrate how the selection of the 1747-ASB image size is determined by: O N 1 2 • the addressing mode (2-slot, 1-slot, 1/2-slot) • the number of chassis slots required 3 4 5 6 7 SW1 Logical Rack Number 8 Logical Group Number 1747-ASB Module O N 1 2 Baud Rate 3 4 5 6 SW2 Primary/Complementary Chassis Reserved ASB Module Image Size 1-Slot Addressing With Six Slots Available 7 Using1-slot addressing and a 7-slot chassis, six slots are available for I/
Configuration Special Image and Chassis Size Considerations 4-13 Sometimes, logical slots and groups are not mapped due to chassis size and selected image size because: • There is not enough 1747-ASB module image to map all of the available slots. • The 1747-ASB image size exceeds requirements for available slots. • One slot of a pair is present, with 1747-ASB module image available for both slots.
4-14 Configuration 1747-ASB Image Size Exceeds Slot Requirements When there are not enough slots available to use the entire 1747-ASB module image, output image data received by the 1747-ASB module for the extra slots is ignored. All input image data sent to the scanner for the extra slots is zero.
Configuration 4-15 Both Slots Of A Pair Are Available But There Is Only Enough 1747-ASB Module Image Space Available For One Slot This condition only occurs in 1/2-slot addressing. When both slots of a pair are available but there is only enough 1747-ASB module image space available for one slot, the lower numbered slot uses the available image space. If a four word specialty module (i.e.
4-16 Configuration When hold last state is selected, outputs are held in their last state when any of the following conditions occur: • RIO link communications is lost due to a broken cable or scanner fault. • The 1747-ASB module is inhibited by the scanner. • The 1747-ASB module receives reset, adapter decide commands from the scanner.
Configuration 4-17 O N Processor Restart Lockout (SW3-2) 1 2 3 4 5 6 7 8 SW1 Logical Rack Number Logical Group Number O N 1 2 Baud Rate 3 4 5 6 7 8 SW2 Primary/Complementary Chassis Reserved SW3 switch 2 determines whether your system automatically resumes RIO link communications with the scanner when: • Link communications are temporarily interrupted. For example, by removing and replacing the RIO connector. • The 1747-ASB module is inhibited and re-enabled.
4-18 Configuration ATTENTION Cycling power on any chassis removes the processor restart lockout condition. ! IMPORTANT After communications to all of the 1747-ASB module's logical devices are established, selecting processor restart lockout disables PLC auto configurations on the 1747-ASB module. If the 1747-ASB module has not received communications for all of its logical devices, you are able to perform PLC auto configurations once the 1747-ASB module is powered up.
Configuration 4-19 Link Response Time DIP Switch Setting SW3 SW3 O N O N 1 1 2 2 3 4 5 6 3 4 5 6 7 7 8 8 Restricted Unrestricted The 1747-ASB module is shipped from the factory with the default position ON (restricted). Last Chassis O N 1 2 3 4 5 6 SW1 Logical Rack Number 7 8 Logical Group Number SW3 switch 4 is used for last chassis selection when the 1747-ASB module is connected to a PLC-2, PLC-5, or SLC scanner (Catalog Number 1747-SN)..
4-20 Configuration The following examples illustrate last chassis conditions.
Configuration 4-21 If the invalid switch setting is selected, a 1747-ASB module error occurs. 1/2-slot addressing is not supported by the PLC-2 family of processors. Specialty I/O Mode (SW3-7) SW3 switch 7 determines the specialty I/O mode (discrete or block transfer). Specialty I/O Mode DIP Switch Settings SW3 SW3 O N O N 1 1 2 2 3 4 5 6 3 4 5 6 7 7 8 8 Discrete Block Transfer The 1747-ASB module is shipped from the factory with the default position ON (discrete).
4-22 Configuration IMPORTANT Use save mode during setup and debug. After debugging is complete, power up in save mode one last time. Remove power and place the 1747-ASB module in check mode prior to normal operation. I/O Module Keying DIP Switch Settings SW3 SW3 O N O N 1 1 2 2 3 4 5 6 3 4 5 6 7 7 8 8 Save Mode Check Mode The 1747-ASB module is shipped from the factory with the default position ON (save mode).
Configuration 4-23 SW3 SW3 O N 1 2 3 4 5 6 7 8 • Hold Last State ON=Hold Last State OFF=Do Not HOld Last State (default) • Processor Restart Lockout ON=Automatic Restart (default) OFF=Processor Lockout • Link Response ON=Restricted (default) OFF=Unrestricted • Last Chassis ON=Not Last Chassis (default) OFF=Last Chassis • Addressing Mode Hold Last State Processor Restart Lockout Link Response Last Chassis/PLC-3 Backup Addressing Mode Bit 1 (MSB) Addressing Mode Bit 0 (LSB) Specialty I/O Mode I/O Module
4-24 Configuration Publication 1747-UM006B-EN-P - June 2003
Chapter 5 Installation and Wiring This chapter presents installation and wiring information for the remote I/O adapter module. If this product is installed within the European Union or EEA regions and has the CE mark, the following regulations apply.
5-2 Installation and Wiring 2. Slide the module into the chassis until the top and bottom tabs lock into place. To remove the module, press and hold the release located on each self-locking tab and slide the module out. 3. Cover all unused slots with the Card Slot Filler, Catalog Number 1746-N2. Module Release Card Guide The modules are connected in a daisy chain configuration on any RIO link.
Installation and Wiring Baud Rate Maximum Cable Distance 57.6K baud 3048 meters (10,000 feet) 115.2K baud 1525 meters (5,000 feet) 230.4K baud 750 meters (2,500 feet) IMPORTANT 5-3 No two devices can be connected to the same point on the link. An example of correct and incorrect link wiring is shown below.
5-4 Installation and Wiring Link Termination A 6-pin keyed connector provides a quick connection to the RIO link and processor restart lockout switch. A user-supplied terminating resistor must be attached across line one and two of the connector at each end of the RIO link. The Ω size of the resistor depends on the baud rate and whether the scanner and all adapters have extended node capability, as shown in the table below.
Installation and Wiring IMPORTANT Wiring a Processor Restart Lockout Switch 5-5 Do not connect anything to the NC (No Connect) terminal. When processor restart lockout is enabled (SW3-2) and communications are restored, the 1747-ASB module does not respond to any type of communications, or communication commands until terminals IN and RET are momentarily shorted together. This occurs while the RIO scanner is attempting to communicate with the 1747-ASB module.
5-6 Installation and Wiring Due to the 1747-ASB module's addressing modes and RIO link operation, the I/O modules controlled by the 1747-ASB module are addressed by the PLC processor on a logical rack, logical group basis and by the SLC processor on a 1747-SN scanner slot and word basis. A remote PLC and SLC label kit is included with each 1747-ASB module to assist you in addressing your I/O modules.
Installation and Wiring Octal Label Kit Installation 5-7 The octal filter and door label must be used when working with a PLC processor as a master. An octal label kit is included with the I/O modules listed in the table on page 5-8. The kits can also be obtained through your Rockwell Automation distributor. Applying the Octal Filter Label 1. Remove the octal filter label from its paper carrier. 2.
5-8 Installation and Wiring Octal Kit and I/O Module Information Octal Kit Catalog Number 1746- Applies to I/O RL40 IA16 RL41 IB16 RL42 IG16 RL43 IM16 RL44 IN16 RL45 IV16 RL46 ITB16 RL47 ITV16 RL50 OA16 RL51 OB16 RL52 OG16 RL53 OV16 RL54 OW16 RL55 OBP16 RL56 OVP16 RL57 OAP12 RL58 IC16 RL59 IH16 RL60 IB32 RL61 IV32 RL70 OB32 (E) RL71 OV32 RL72 OB16E Module 1746-(1) (1) Kit available with series C I/O modules.
Chapter 6 Start-Up and Operation This chapter guides you through: • • • • • • • • system start-up powerup and initialization sequences initial link communications normal operation communication exceptions remote expansion chassis power loss invalid RIO link transfers testing the 1747-ASB module Make sure SW3-8 is ON (save mode) while you setup and debug your system. When you have completed debugging your system: System Start-Up 1. Cycle the power one last time in save mode (SW3-8 ON). 2.
6-2 Start-Up and Operation Save Mode When power is applied in save mode, the 1747-ASB module: 1. Performs power up diagnostics 2. Reads and verifies the actual DIP switch and I/O module configuration 3. Saves the DIP switch and I/O module configuration 4. Waits for RIO link communications from the scanner Check Mode When power is applied in check mode, the 1747-ASB module: 1. Performs power up diagnostics 2. Verifies the stored configuration integrity 3.
Start-Up and Operation Normal Operation 6-3 During normal operation (PLC or SLC in Run mode), the 1747-ASB module appears as shown below: ADAPTER COMM FAULT Red FAULT LEDS is off. Green COMM LED is on. STATUS Status display indicates a run condition. A communication exception is not an error because once the exception is corrected, the 1747-ASB module begins normal operation without the need to cycle remote chassis or remote expansion chassis power.
6-4 Start-Up and Operation Inhibit Condition When any of the 1747-ASB module's logical devices are inhibited before communication with all of its logical devices occur at least once: • The inhibited logical devices do not communicate on the RIO link. • The enabled logical devices communicate on the RIO link. • The 1747-ASB module does not send output data to any of its output modules, even those that are enabled. • The 1747-ASB module does not process any RIO block transfer writes.
Start-Up and Operation 6-5 • Discrete outputs are held in their last state if hold last state is selected, or discrete outputs are reset if hold last state is not selected. • The 1747-ASB module does not process any RIO block transfer writes. • The 1747-ASB module sends new input data from its input modules to the scanner for enabled logical devices. • The 1747-ASB module processes RIO block transfer reads for enabled logical devices.
6-6 Start-Up and Operation Remote Expansion Chassis Power Loss If power to any remote expansion chassis is lost, a 1747-ASB module error occurs. When power to the remote expansion chassis is restored, the 1747-ASB module acts as if its own chassis power was cycled and resets itself, restoring normal operation unless a major fault occurred. The 1747-ASB module assigns each slot in the remote chassis and remote expansion chassis a fixed amount of its image using slot addressing.
Start-Up and Operation 6-7 RIO Discrete Transfers To Block Transfer Chassis Slots Discrete output image data received by the 1747-ASB module for a block transfer slot is ignored by the 1747-ASB module. Discrete input image data from the 1747-ASB module for block transfer slots may be non-zero. RIO Block Transfers To Discrete Chassis Slots RIO block transfers to the 1747-ASB module for discrete slots are ignored by the 1747-ASB module.
6-8 Start-Up and Operation 2. Apply power to all chassis. 3. After completing power up diagnostics, the 1747-ASB module display appears as shown below: ADAPTER COMM FAULT Green COMM LED is off. Red Fault LED is off. STATUS Status display indicates no RIO communications condition. 4. Configure the PLC or SLC processor so that the scanner will communicate on the RIO link with the 1747-ASB module. Place the processor in the test mode.
Start-Up and Operation 6-9 When the 1747-ASB module is receiving reset, adapter reset or reset, adapter decide commands, it: • returns input data for all of its input modules and sends output data to all of its specialty I/O modules. It does not turn any discrete outputs on. • processes all discrete and block transfers • controls the specialty I/O modules in the same manner as an SLC processor in TEST mode. How each specialty I/O module responds to the TEST mode is specific to each specialty I/O module.
6-10 Start-Up and Operation Any discrete I/O module or discretely mapped specialty I/O module which is mapped into the 1747-ASB module image having only output image, is scanned by the 1747-ASB module unless: • The 1747-ASB module is not receiving communications from the scanner. • The 1747-ASB module is receiving reset, adapter decide commands and the discrete outputs are being held in their last state.
Chapter 7 Troubleshooting This chapter presents status display information during operational and fault conditions. The 1747-ASB module has two LEDs and a status display. These LEDs and status display are used to indicate operating status and error conditions while the module is operating. Troubleshooting Introduction Green COMM LED ADAPTER COMM Status Display indicated a unique alphanumeric pattern. RED COMM LED FAULT STATUS There are two types of errors: major and minor.
7-2 Troubleshooting Contacting Rockwell Automation If you need to contact Rockwell Automation for assistance, please have the following information available when you call: • Processor type, 1747-ASB series letter, and firmware (FRN) number. See label on left side of processor and 1747-ASB module.
Troubleshooting 7-3 Error Codes for Error Conditions COMM LED FAULT LED off Status Display Error Condition Corrective Action on Power Up Self Test in progress This appears for less than one second after power is applied. Replace the 1747-ASB module if condition persists. off on Powerup OK. 1747-ASB configuring RIO image. This occurs for several seconds after power is applied. Replace the 1747-ASB module if condition persists.
7-4 Troubleshooting off flashing Illegal logical Rack Address (8 or above in primary mode or 63 in complementary mode). Check the starting logical rack number (SW1-1,2,3,4,5,6). off flashing Last Address Exceeded (image crosses into logical rack 8 in primary mode or logical rack 63 in complementary mode) Check the starting logical rack number (SW1-1,2,3,4,5,6), starting logical group number (SW1-7,8), and image size selection (SW2-5,6,7,8).
Troubleshooting 7-5 off flashing Configuration Read Fault (data in EEPROM not valid). The configuration stored in non-volatile memory is not valid when powering up in Check Mode. Change to Save Mode and restore power. Change back to Check Mode and restore power. off flashing Duplicate Adapter Address. There is another adapter on the RIO link that has the same RIO address as the 1747-ASB module.
7-6 Troubleshooting or Starting Logical Group mismatch. 1-digit decimal value previously saved is displayed (group 0, group 2, etc.). or or or Baud Rate mismatch. Baud rate previously saved is displayed. Abbreviated values are used. or Primary/Complementary Selection mismatch. The mode previously saved is displayed. or to Image Size mismatch. Number of groups from 02 to 32 decimal indicates previously saved selection. or Hold Last State (HLS) Selection mismatch.
Troubleshooting or 7-7 Addressing Mode mismatch. 1/2-slot, 1-slot, and 2-slot indicates previously saved selection. or or Specialty I/O Mode mismatch. Discrete (dSc) or Block Transfer (bL) indicates previously saved selection. (1) C stands for configuration, the first number from the left is the DIP switch number (SW1, SW2, or SW3). The second number stands for the highest individual switch number (1 - 8). C38 is switch SW3, switch 8. (2) This is the saved parameter setting.
7-8 Troubleshooting I/O Runtime Fault Codes - Code 4 Code 4(1) Meaning I/O Parity Error Hardware Parity Error or module installed or removed under power I/O Module Removed Under Power File Access Grant Timeout (specialty I/O only) I/O Module Fault (generic) through I/O Module Reported Error Code I/O Module Reported Error Code Unknown Module Inserted Under Power (1) The fault code is alternated with the corresponding slot number (L slot#).
Chapter 8 Application Examples This chapter presents two SLC 500 examples and one PLC-5/40 example. The application examples consist of: • • • • • • • system overview device configuration processor image 1747-ASB module configuration details mapping details address label explanation application program excerpt The following is a very basic SLC 500 remote I/O application example. This application consists of an SLC 5/02 processor controlling one local and one remote chassis of I/O.
8-2 Application Examples 0 1 2 ASB 1746-IA16 1746-IA16 1746-IA16 1746-OA16 1746-OA16 1746-OA16 SLC 5/02 17461-OW8 1746-NIO4I 1747-SN The application is illustrated below. When the switch is closed, bulbs 1 and 2 turn on and an analog signal is moved to analog module output 1, which leads to the meter. 0 3 The meter is connected to output 1. 1 The switch is connected to input 15. 2 3 4 5 6 Bulb 2 is connected to output 12. Bulb 1 is connected to output 4.
Application Examples 8-3 For more details on the 1747-SN RIO scanner, refer to the user manual, publication 1747-6.6. The RIO scanner is configured for 230.4K baud.
8-4 Application Examples The default configuration size of the scanner image is 32 words. You can specify that the SLC 5/02 processor scan is less than 32 words with your programming device. 1747-ASB Module Configuration Details The entire image of the 1747-ASB module is contained in logical rack 0. It does not cross a logical rack boundary. Therefore, it appears as one logical device to the scanner.
Application Examples 8-5 Three input and output image words are not used. However, when using 16-point I/O, 1-slot addressing provides I/O configuration flexibility. The modules can be inserted into any slot, in any order. Slots 1, 2, and 3 contain 16-point input modules. The output words assigned to these slots are unused. Slots 4, 5, and 6 contain 16-point output modules. The input words assigned to these slots are unused.
8-6 Application Examples 0 The meter is connected to output 1. 1 2 0 –7 ✓ 8 – 15 ✓ 3 BT Discrete Remote SLC System 1 2 3 4 5 Bulb 2 is connected to output 12. 0 –7 ✓ 8 – 15 ✓ 3 SN Slot 0 SN Word(s) 0 3 The switch is connected to input 15. SN Slot ASB 1746-IA16 1746-IA16 1746-IA16 1746-OA16 1746-OA16 1746-OA16 SLC 5/02 1746-OW8 1746-NIO4I 1747-SN Shown below are examples of how the labels are filled out.
Application Examples 8-7 Application Example Program Shown below is an excerpt from the user program. When the switch is closed, bulbs 1 and 2 turn on and the decimal value 5555 is moved to analog output 1 and is converted to an analog signal. I:3.0 ][ Switch 15 MOV MOVE Source Dest 5555 O:2.1 Meter O:3.4 () 4 Bulb 1 O:3.3 () 12 Bulb 2 This application consists of an SLC 5/02 processor controlling local and remote I/O.
8-8 Application Examples 1747-ASB module 2 controls the following I/O modules: • 1746-OA8, 8-point AC output module • 1746-IO12, 6-point input/output module • 1746-IA16, 16-point AC input module 0 3 The meter is connected to output 1. 1 2 The switch is connected to input 17. Publication 1747-UM006B-EN-P - June 2003 3 4 5 6 Bulb 2 is connected to output 12.
Application Examples 8-9 RIO Device Configuration The 1747-ASB modules and RediPANEL are configured in the following manner. Function 1747-ASB Module 1 1747-ASB Module 2 RediPANEL(1) Starting logical rack number 1 0 2 Starting logical group number 6 0 4 Image size (number of logical groups) 6 2 4 Addressing mode 1-slot 2-slot Not applicable Specialty I/O mode(2) Discrete Discrete Not applicable Baud rate 230.4K 230.4K 230.
8-10 Application Examples SLC Processor Image Shown below are the SLC processor's input and output image. The SLC processor image is comprised of the local I/O module images and the RIO scanner images. The RIO scanner image size is four logical racks. 1747-ASB module 1, 1747-ASB module 2, and the RediPANEL are in the RIO scanner image.
Application Examples 8-11 1747-ASB module 1 is not configured as the last chassis because the highest numbered logical group it uses (Group 3) is not the highest numbered logical group in the highest logical rack it resides in. The RediPANEL uses the highest numbered logical group (Group 7) in logical rack 2. 1747-ASB module 1 is configured for hold last state and processor restart lockout.
8-12 Application Examples 1747-ASB Module 1 I/O Mapping Details Because 1747-ASB module 1 is configured for 1-slot addressing, has six logical groups and six slots available for I/O, all of the slots present are mapped into the scanner image. No extra slots in the chassis, or extra words in the image remain.
Application Examples 8-13 and output image remain unassigned to any slot because there is no slot 4 in the chassis. Due to slot pairing, slot 3 can use the extra image space. Because the specialty I/O mode chosen is discrete mode and the 1747-ASB module is configured for 2-slot addressing, all specialty modules having one word or less of input and output image are discretely mapped. Slot 1 contains an 8-point output module, Catalog Number 1746-OA8, that uses the output image assigned to slot 1.
8-14 Application Examples The meter is connected to output 1. 0 –7 ✓ SN Slot 8 – 15 ✓ 3 SN Word(s) BT 0 3 14, 15 Remote SLC TM System The 0–7 and 8–15 boxes are checked because the module requires more than one byte of image. The SN Slot is 3 because that is the slot the scanner occupies in the local SLC chassis. The SN Words are 14, 15 because they are the SN image words assigned to the NIO41.
Application Examples 8-15 Application Example Program Shown below is an excerpt from the user program. When the switch is closed, bulbs 1 and 2 turn on and the decimal value 5555 is moved to analog output 1 and is converted to an analog signal. MOV I:3.17 ][ 1 Switch(1) MOVE Source 5555 Dest O:3.15 Meter O:3.0 () 12 Bulb 1(2) O:3.19 () 12 Bulb 2 (1) Input bits 16–31 must be converted to 0–15 by subtracting 16. Therefore, Input bit 17 is converted to 1.
8-16 Application Examples PLC-5 Example The PLC-5/40 built-in scanner controls two 1747-ASB modules. 1747-ASB module 1 controls a 7-slot and 10-slot chassis.
0 1 2 3 The switch is connected to input 12. 0 1 2 3 4 5 6 The bulb is connected to output 5. 7 8 9 10 11 12 13 14 15 16 0 Meter 2 is connected to output 2. IMPORTANT 8-17 ASB 2 1746–NI4 1746–NO4I 1746–NIO4I 1746–OA8 1746–NO4V 1746–OW16 1746–IA16 1746–OV16 1746–IV16 PLC-5/40 1746–OW8 1746–OV8 1746–OB16 1746–IB16 ASB 1 1746–NIO4V 1746–OW8 1746–OW16 1746–IA16 1746–OG16 1746–IG16 Application Examples 1 2 3 Meter 1 is connected to output 0.
8-18 Application Examples PLC Processor Image Because the 4-slot local chassis is configured for 1-slot addressing, the first four logical groups of logical rack 0 are used for local I/O, the remaining four groups are not used. Logical racks 1, 2, and 3 are available for remote I/O because they are not used by the local chassis.
Application Examples 8-19 1747-ASB Module 1 Configuration Details Because the image of the 1747-ASB module 1 crosses logical rack boundary 1 and 2, 1747-ASB module 1 appears as two logical devices to the RIO scanner.
8-20 Application Examples 1747-ASB Module 2 Configuration Details Because the image of 1747-ASB module 2 does not cross a logical rack boundary, 1747-ASB module 2 appears as one logical device to the scanner.
Application Examples 8-21 1747-ASB Module 1 I/O Mapping Details Because 1747-ASB module 1 is configured for 2-slot addressing, has eight logical groups and 16 I/O slots available, all of the slots present are mapped into the PLC-5/40 image. No extra slots in the chassis or extra words in the image remain. Each slot is assigned one byte in the PLC-5/40 input and output images.
8-22 Application Examples 1747-ASB Module 2 I/O Mapping Details Because 1747-ASB module 2 is configured for 1/2-slot addressing, has six logical groups and three slots available for I/O, all of the slots present are mapped into the PLC-5/40 image. Since slot three cannot be paired with slot four and only two words of image are available, slot three has the two words assigned to it. 1747-ASB module 2 is configured for discrete mode operation.
Application Examples 8-23 RIO Address Label Examples Due to the 1747-ASB module's addressing modes and RIO link operation, the I/O modules controlled by the 1747-ASB module are addressed by the PLC processor on a logical rack, logical group basis. A label kit is included with each 1747-ASB module to assist you in assigning the logical rack and logical group designation for each I/O module. Refer to chapter 6 for more information regarding these labels. 0 1 2 3 0 The switch is connected to input 12.
8-24 Application Examples Application Example Program Shown below is an excerpt from the user program. When the switch is closed, the bulb illuminates, decimal value 5555 is moved to the 1746-NO4V output 2 (connected to meter 2) and to the 1746-NIO4I output 0 (connected to meter 1). The inputs to the 1746-IA16 module are in octal. The switch is wired to input 12 (octal) and its value is represented by bit 12 (octal) in the process image.
Appendix A Specifications This appendix provides adapter and system specifications, as well as throughput information.
A-2 Specifications Network Specifications Baud Rate Determination of Maximum Cable Length and Terminating Resistor. Table 8.1 Baud Rate Determination of Maximum Cable Length and Terminating Resistor Size Baud Rate Using Extended Node Capability Not Using Extended Node Capability Maximum Cable Distance (Belden 9463) 57.6K baud 3048 meters (10,000 feet) 115.2K baud 1524 meters (5,000 feet) 230.4K baud 762 meters (2,500 feet) 57.6K baud 3048 meters (10,000 feet) 115.
Specifications A-3 In the following example, the input event occurs at a discretely mapped I/O module. The input image of I/O module is read by the 1747-ASB module during a 1747-ASB module backplane scan. The input data is placed into a buffer, which is next read by the scanner during a discrete scan of the RIO link. Once the input data is read by the scanner, it is sent to and read by the PLC or SLC processor.
A-4 Specifications Calculating Throughput The 1747-ASB module throughput is determined by more than the 1747-ASB module itself. The input and output module delays, scanner scan time, and processor scan time contribute to throughput as well. Discrete I/O Throughput without Block Transfers Present The information in this section is used to calculate the discrete throughput of the 1747-ASB module if both conditions are true: • There are no block transfer mapped I/O modules in the 1747-ASB chassis.
Specifications A-5 RIO Scan Time Calculation (TRIO) The RIO scan time is calculated by identifying the baud rate and image size of each logical device on the RIO link. Locate the corresponding time value in the following table. If you are using multiple logical devices, add the time values together to determine the total RIO scan time (TRIO). TRIO = Tadapter 1 + Tadapter 2 + Tadapter 3 Table 8.2 RIO Scan Times for Adapters(1) Adapter Size Baud Rate 57.6K 115.2K 230.4K 1/4 logical rack 6.0ms 3.
A-6 Specifications 1747-ASB Module Backplane Scan Time (Tbp) The 1747-ASB module backplane scan time is determined by the type of I/O modules in the 1747-ASB chassis and the baud rate.
Specifications A-7 Discrete I/O Throughput without Block Transfers Present Example A PLC 5/40 is controlling an RIO link running at 115.
A-8 Specifications These values are listed in the Backplane Scan Time table on page A-6. 4. Add the backplane scan times together for each module in slots one, two, and three. Tbase backplane scan time (Tb) = TI/O module 1 + TI/O module 2 + TI/O module 3 Tb= 0.325ms + 0.273ms + 0.625ms + 0.620ms Tb= 1.843ms 5. Use the appropriate Total Backplane Scan Time formula found on page A-6 to calculate the total backplane scan time. Tbp = 1.32Tb + 1.58 Tbp = 1.32(1.843ms) + 1.58 Tbp = 4.01ms 6.
Specifications A-9 Discrete I/O Throughput with Block Transfers Present The information in this section is used to calculate the discrete throughput of the 1747-ASB module if either of the following conditions are true: • There are block transfer mapped I/O modules in the 1747-ASB chassis. • There are RIO block transfers occurring on the RIO link to any chassis.
A-10 Specifications words sent in the block transfer and the selected baud rate. RIO link protocol allows for a maximum of one RIO block transfer to be sent to each logical device on the RIO link during any single RIO scan. The RIO scan increase (Tri) for each logical device is: Baud Rate RIO Scan Time Increase (Tri) 57.6K baud 0.300 x block transfer length + 5.0ms 115.2K baud 0.150 x block transfer length + 3.5ms 230.4K baud 0.075 x block transfer length + 2.
Specifications A-11 1. Tdm-nbt equals 80ms(1) for a specific pair of discretely mapped input and output modules. The maximum throughput for these discretely mapped I/O modules when block transfers are present are: Tdm-bt = Tdm-nbt + 2Tbtx Tdm-bt = 80ms + 2Tbtx 2. Determine the maximum length of the block transfer to each logical device. There are two logical devices for the 1747-ASB module. The largest block transfer that is possible with the full logical rack, logical device is 8 words.
A-12 Specifications 6. Substitute all the values for variables in the throughput formula and solve for throughput: Tdm-bt = Tdm-nbt + 2Tbtx Tdm-bt = 80ms + 2(34.7)ms Tdm-bt = 149.4ms Block Transfer Throughput Block transfer throughput is always slower than discrete data transfer.
Appendix B Differences Between the 1747-ASB Module and the 1771-ASB Series C Module This appendix examines the differences between Catalog Number 1747-ASB and Catalog Number 1771-ASB Series C, Revision E or later.
B-2 Differences Between the 1747-ASB Module and the 1771-ASB Series C Module Hold Last State Operation (page 4-15) When the hold last state mode is selected, the 1771-ASB module holds discrete outputs in their last state if: • • • • an error occurs RIO communications are lost the 1771-ASB module is inhibited the 1771-ASB module receives reset, adapter decide commands from the scanner When the hold last state mode is selected the 1747-ASB module holds discrete outputs in their last state if: • RIO commu
Differences Between the 1747-ASB Module and the 1771-ASB Series C Module Inserting and Removing I/O Modules Under Power (page 6-9) ATTENTION ! B-3 Disconnect power to the 1771- or 1747-ASB chassis before attempting to insert, remove, or wire any I/O modules. In most cases, inserting or removing I/O modules while under power does not cause a 1771-ASB error. Whenever the 1747-ASB module is not faulted, inserting or removing I/O modules under power does cause a 1747-ASB error.
B-4 Differences Between the 1747-ASB Module and the 1771-ASB Series C Module If the 1747-ASB module is configured for the block transfer mode, it handles all specialty I/O modules in the same manner as the 1771-ASB module does by using RIO block transfers. IMPORTANT PLC processor control of 1771 and 1747 specialty I/O modules on the RIO link is the same if the 1747-ASB module is configured for RIO block transfer. However, the I/O modules themselves are not controlled in the same way.
Differences Between the 1747-ASB Module and the 1771-ASB Series C Module Physical Slot Numbering (page 3-2) B-5 The 1771-ASB module resides in an unnumbered slot. The first physical slot available to an I/O module is slot 0. The subsequent physical slots are numbered decimally, up to a maximum of 15. The 1747-ASB module resides in slot 0. The first physical slot available to an I/O module is slot 1. The subsequent physical slots are numbered decimally, up to a maximum of 30.
B-6 Differences Between the 1747-ASB Module and the 1771-ASB Series C Module Publication 1747-UM006B-EN-P - June 2003
Appendix C DIP Switch and Address Configuration Worksheets This appendix provides worksheets for you to configure your DIP switches and to address your I/O modules. Use this worksheet to record the DIP switch settings for each of your module. DIP Switch Configuration Self Locking Tab DIP Switches CAT 2 3 4 5 6 7 8 2 3 4 5 6 7 8 2 3 4 5 6 7 8 FRN R IMPORTANT: SLC 500 INSTALL IN SLOT ZERO OF MODULAR CHASSIS ONLY REMOTE I/O ADAPTER MODULE CURRENT REQUIREMENT: 375mA SER IND. CONT. EQ.
C-2 DIP Switch and Address Configuration Worksheets SW3 SW2 Last Chassis/PLC-3 Backup Addressing Mode Bit 1 (MSB) Addressing Mode Bit 0 (LSB) SW3 ASB Module Image Size Bit 3 (MSB) ASB Module Image Size Bit 2 ASB Module Image Size Bit 0 (LSB) Addressing Mode Bit 0 (LSB) Baud Rate Bit 0 (LSB) Primary/Complementary SLC Chassis Reserved ASB Module Image Size Bit 3 (MSB) ASB Module Image Size Bit 2 ASB Module Image Size Bit 0 (LSB) SW2 Addressing Mode Bit 0 (LSB) Baud Rate Bit 0 (LSB) Primary/Compleme
DIP Switch and Address Configuration Worksheets Address Configuration Use this worksheet to address the I/O modules residing in the 1747-ASB module chassis.
C-4 DIP Switch and Address Configuration Worksheets SLC Processor Output Image SLC Processor Input Image High Byte Bit Number Logical Rack 0 Logical Rack 1 Logical Rack 2 Logical Rack 3 Decimal 15 Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 Group 0 Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7 High Byte Low Byte 8 7 0 Bit Number I:e.
Index Numerics 1/2-slot addressing 3-10 considerations 3-11 examples 3-12 1771-ASB series c B-1 1-slot addressing considerations 3-8 examples 3-9 2-slot addressing 3-4 considerations 3-5 examples 3-6 A adapter 1-4 extended node capability 1-8 interaction with scanners 1-2 on RIO link as slave device 1-2 adapter image 1-4 in relation to logical devices 1-6 size of 1-5 addressing I/O modules 3-3 1/2-slot addressing 3-10 considerations 3-11 examples 3-12 1-slot addressing 3-7, 3-8 considerations 3-8 examples
2 Index compatible modules 1-10 compatible RIO adapters 1-9 compatible RIO scanners 1-8 complementary I/O 4-5 in basic SLC application example 8-3, 8-4 in PLC application example 8-17, 8-19, 8-20 in SLC application example 8-9, 8-11 contacting Allen-Bradley for assistance 7-2 D definitions 1-3 differences between 1747-ASB and 1771-ASB series c modules B-1 DIP switch locations B-4 hold last state B-2 I/O module keying B-4 image size selection B-1 inhibit functionality B-5 inserting and removing I/O module
Index inhibit 6-4 installing the ASB module in an SLC chassis 5-1 invalid RIO link transfers 6-6 L labels, addressing attaching to the I/O modules 2-5, 5-6 labels, door 1-13 applying octal labels 2-6 last chassis/PLC 3 backup 4-19 in basic SLC example 8-3, 8-4 in PLC example 8-17, 8-19, 8-20 in SLC example 8-9, 8-11 link response time 4-18 in basic SLC example 8-3 in PLC example 8-17, 8-19, 8-20 in SLC example 8-9 link termination 5-4 resistor required for 5-4 link wiring 5-2 correct link wiring 5-2 incor
4 Index basic SLC application example 8-5 PLC application example 8-23 PLC example 5-6 SLC application example 8-13 SLC example 5-6 RIO device configuration 8-17 basic SLC application example 8-2 PLC application example 8-17 SLC application example 8-9 RIO link 1-2 invalid link transfers 6-6 physical and logical specifications 1-8 RIO scan time throughput A-5 S save mode 6-2 scanner 1-2 extended node capability 1-8 image division 1-4 logical groups 1-4 logical racks 1-4 interaction with adapters 1-2 over
Publication 1747-UM006B-EN-P - June 2003 7 Supersedes Publication 1747-6.13 - December 1996 Copyright © 2003 Rockwell Automation. All rights reserved. Printed in the U.S.A.
