PLC-5 PROGRAMMABLE CONTROLLERS SELECTION GUIDE 1785 and 1771
PLC-5 Programmable Controllers Comparison Category Controller Catalog Number User Memory Words, Max Total I/O, Max Number of Communication Ports (mode) Standard PLC-5/11 1785-L11B 8000 512 1 DH+ or Remote I/O (Adapter or Scan) PLC-5/20 1785-L20B 16,000 512 1 DH+ and 1 DH+ or Remote I/O (Adapter or Scan) PLC-5/30 1785-L30B 32,000 1024 2 DH+ or Remote I/O (Adapter or Scan) PLC-5/40 1785-L40B 48,000 2048 4 DH+ or Remote I/O (Adapter or Scan) PLC-5/40L 1785-L40L 48,000 2048 2 DH+
Introduction 1 Introduction 1785 PLC-5 Programmable Controller: The Foundation of Control Architecture The PLC-5 programmable controller stands at the center of a control architecture that brings together existing and future systems by means of networks such as EtherNet/IP, ControlNet and DeviceNet, and offers connectivity among SLC 500, ControlLogix, and MicroLogix controllers.
2 Introduction PLC-5 System Overview A PLC-5/1771 control system, at minimum, consists of a programmable controller and I/O modules in a single 1771 chassis with a power supply. You choose the controller with the on-board communication ports you need. A simple system can consist of only a standalone controller and I/O modules all in a single chassis. PLC-5 Programmable Controller 1771 I/O Chassis Backplane 1771 I/O modules in the I/O chassis in which the PLC-5 controller resides. A maximum of 512 I/O.
Introduction 3 In the typical configuration illustration, a ControlNet port on the controller interfaces the processor to the ControlNet link. In each of the two chassis remote from the controller, a 1771-ACN15 I/O Adapter Module provides I/O modules in those chassis with an interface to the ControlNet link. In this configuration, the PLC-5 controller monitors/controls the I/O in its local I/O chassis as well as the I/O in the remote locations.
4 Introduction Lay Out the System Lay out the system by determining the network configuration and the placement of components in each location. Decide at this time whether each location will have its own controller. Place each controller’s I/O on an isolated network to maximize the performance and to more easily accommodate future network or system configuration changes. If you plan to share I/O, make sure the I/O is on a network that each controller can access.
Introduction 5 Apply Backup Solutions The ControlNet Hot Backup Module, 1785-CHBM, provides backup of ControlNet I/O. A secondary controller qualifies critical-control information with the primary controller. Both controllers consume information from inputs and connect to outputs, but only the primary controller controls the outputs. The secondary controller establishes control of outputs if the primary controller shuts down. For more information, see page 23.
6 Introduction Use the following checklist as a guide to completing your own system specification. The inside of the back cover of this selection guide is a worksheet you can use to record your selections. 9 Step 1 For more information, see Select I/O Modules Select I/O based on: • type of information to send/receive. • application requirements. • electrical requirements. 2 Select Network Communications • • • • • 3 Select Networks based on: type of information to send/receive. system performance.
Select I/O Modules Step 1 - Select: • • • • • • • 1771 I/O Modules 1746 I/O Modules 1794 FLEX I/O Modules 1797 FLEX Ex I/O Modules 1791D CompactBlock I/O Modules 1734 POINT I/O Modules Encompass Partner Program I/O Modules 7 Select I/O Modules Rockwell Automation offers many types of I/O modules and has more than 3 million modules installed in applications worldwide. Rockwell Automation offers chassis-based and both block and modular-distributed modules.
8 Select I/O Modules 1771 I/O Modules The 1771 series I/O modules offer digital, analog, and special-requirement modules. The 1771 I/O modules feature a wide range of: • signal interfaces to ac and dc sensors and actuators. • I/O densities with as many as 32 I/O points per module. • signal levels, including standard analog inputs and outputs and direct thermocouple and RTD temperature inputs.
Select I/O Modules Category Cat. No. Inputs and Outputs Voltage Backplane Current Load 120V ac/dc 1771-ID 6 in 92...38V isolated 74 mA 1771-IAD 16 in 79...138V 195 mA 1771-ID16 16 in 77...138V ac 105...138V dc isolated 75 mA 1771-IA 8 in 87...138V ac 97...138V dc 75 mA 120V ac 1771-IAN 32 in 85...138V 280 mA 220V ac/dc 1771-ID01 6 in 184...276V ac/dc 74 mA 1771-IM 8 in 184...276V ac/dc 75 mA 9 1771 Digital Output Modules Category Cat. No.
10 Select I/O Modules Category Cat. No. Inputs and Outputs Voltage Backplane Current Load 24-120V ac/dc Relay Contact 1771-OW 8 out 24...138V ac resistive load 24-125V dc 700 mA 1771-OW16 16 out 24...250V ac isolated 24...150V dc isolated 1.3 A 1771-OWN 32 out 24...138V ac 24...125V dc 2.5 A 1771-OWNA 32 out 24...138V ac resistive load 24-125V dc 2.5 A 1771-OX 4 out 0...250V ac isolated inductive load 0...175V dc isolated 550 mA 1771-OYL 8 out 0...
Select I/O Modules 11 1771 Analog Output Modules Category Cat. No. Inputs and Outputs Range: Voltage and Current Backplane Current Load Selectable 1771-OFE1 4 out +10V dc 1.5 A Current Only Voltage Only 1771-OFE2 4 out 4...20 mA 1.5 A 1771-OFE3 4 out 0...50 mA 2.5 A 1771-NOC 8 out 0...25 mA 2.9 A at 20 mA 3.3 A at 25 mA 1771-NOV 8 out +10V dc 2.1 A 1771 Analog Combination Modules Category Cat. No.
12 Select I/O Modules 1771 Intelligent Modules Category Cat. No. Use Backplane Current Load Counter 1771-IJ Incremental encoder/counter 1.2 A Positioning 1771-IK High-speed counter 1.2 A 1771-VHSC Very high speed counter 0.65 A 1771-DE Absolute encoder 0.8 A 1771-DL Gray encoder 0.12 A 1771-QA Stepper motor positioning 0.8...2.4 A 1771-QB Linear positioning 1.6 A 1771-QC Servo positioning 1.75 A 1771-M3 Servo controller 1.75 A 1771-ES Servo encoder feedback expander 1.
Select I/O Modules 1746 I/O Modules 13 The 1746 I/O modules (SLC 500 I/O) provide a cost-effective, Remote I/O option. Use an SLC 500 Remote I/O module (1747-ASB) or ControlNet adapter module (1747-ACN15 or -ACNR15) to directly interface 1746 I/O modules to the PLC-5 system. The 1746 I/O modules feature: • high-density, 32-point and combination modules, which reduce rack size and panel space requirements. • removable terminal blocks and 16-point modules, which simplify wiring and replacing modules.
14 Select I/O Modules 1794 FLEX I/O Modules FLEX I/O is a cost-effective, flexible, modular I/O system for distributed applications and offers all the functions of larger rack-based I/O without the space requirements. You can independently select the I/O type, termination, and network, appropriate for your specific application. This means one I/O product line can fit all your needs.
Select I/O Modules 1797 FLEX Ex I/O Modules 15 The 1797 series I/O modules (FLEX Ex I/O) are a flexible I/O system that mounts directly to the controlled equipment in a hazardous area. This eliminates the need for intrinsically safe (IS), barriers/isolators and separation of control and process. Additionally, the modules: • offer modularity for distributed intrinsically-safe systems. • have dual-fault protection IS circuits that provide high fault tolerance.
16 Select I/O Modules 1791D CompactBlock I/O Modules The 1791D I/O modules (CompactBlock I/O) are designed for applications that require I/O to be distributed close to sensors and actuators or to be placed in small enclosures. The modules feature: • self-contained package that provides cost-effective distribution of up to 32 points per node. • small size that lets you install in shallow and confined areas. • hardware watchdog circuit.
Select I/O Modules 1734 POINT I/O Modules 17 POINT I/O is a family of I/O modules that are ideal for applications where flexibility and low-cost of ownership are key for successful control system design and operation. POINT I/O can be used in remote device panels, local control panels, and can be accessed from many locations including the Internet. This product is just-what-you-need granularity in one to eight points to reduce system cost and size.
18 Select I/O Modules Additional I/O Selections The Encompass Partners Program, Rockwell Automation’s third-party product referencing program, builds on the strengths of our products. As a technology-sharing program, Encompass is product-based and application-focused. Encompass allows third-party companies to provide functionality not delivered in Rockwell Automation products. The following table lists additional I/O choices that are part of the Encompass program.
Select Network Communications Step 2 - Select: • EtherNet/IP Protocol • ControlNet Network • DeviceNet Network • Serial Network • Data Highway Plus • Remote I/O 19 Select Network Communications Use specific PLC-5 controllers with network connections and install multiple communication modules into the PLC-5 backplane to route control and information data between the different networks.
20 Select Network Communications Select a Network Configure your system for information exchange between a range of devices and computing platforms and operating systems.
Select Network Communications 21 Ethernet/IP protocol is an open industrial-networking standard that supports implicit messaging (real-time I/O messaging), explicit messaging (messaging exchange), or both and uses commercial off-the-shelf Ethernet communication chips and physical media. EtherNet/IP Protocol Additionally, EtherNet/IP standard uses the protocols used by the Internet.
22 Select Network Communications PLC-5 Ethernet Interface Module The PLC-5 Ethernet Interface Module (1785-ENET) is a single-slot module that attaches to the side of any Enhanced PLC-5 series B or later controller, Ethernet PLC-5 controller, or ControlNet PLC-5 controller to provide additional Ethernet connectivity. Cat. No.
Select Network Communications ControlNet Network 23 ControlNet PLC-5 controllers offer embedded ControlNet communication capabilities for control and information processing. The ControlNet network provides both I/O control and peer-to-peer communications on a 5 Mbps network, with repeatability and determinism. You can have multiple ControlNet PLC-5 controllers on one ControlNet network, with each controller handling its own I/O on the network, and at the same time communicating with each other.
24 Select Network Communications ControlNet Communication Adapters Cat. No.
Select Network Communications 25 The 1771-SDN DeviceNet scanner module acts as an interface between DeviceNet devices and a PLC-5 controller. The scanner module communicates with DeviceNet devices over the network to: DeviceNet Network • read and write inputs and outputs to and from a device. • download configuration data to a device. • monitor operational status of a device.
26 Select Network Communications The PLC-5 serial port is configurable for RS-232, RS-423, or RS-422A compatible serial communication. Use the serial port to connect devices that: Serial Network • communicate using the DF1 protocol, such as modems, communication modules, programming workstations, or other serial devices. • send and receive ASCII characters, such as ASCII terminals, bar-code readers, and printers. When configured for System mode, the serial port supports the DF1 protocol.
Select Network Communications 27 The PLC BASIC Module occupies one slot in the 1771 I/O chassis and runs user-written BASIC and C programs. These programs are independent of your PLC-5 controller and provide an easy and fast interface between a PLC-5 controller, 1771 backplane, and RS-232, -422, or -485 devices. The module can also communicate with a remote SLC controller or remote device on the DH-485 network through a DH-485 port. Cat. No. Function Comm.
28 Select Network Communications When configured for User mode, the serial port supports ASCII devices. Use the PLC-5 ASCII instructions to send and receive information from these devices.
Select Network Communications 29 The Data Highway Plus (DH+) network is a local area network designed to support remote programming and data acquisition for factory-floor applications. You can also use DH+ communication modules to implement a small peer-to-peer network. Data Highway Plus You can use a DH+ network for data transfer to other PLC-5 controllers or high-level computers and as a link for programming multiple PLC-5 controllers.
30 Select Network Communications The strength and versatility of the remote I/O network comes from the breadth of products it supports. In addition to 1771 I/O, the remote I/O network supports many Rockwell Automation and third-party devices. Remote I/O Typical applications range from simple I/O links with controllers and I/O, to links with a variety of other devices. You connect devices through remote I/O adapter modules or built-in remote I/O adapters.
31 Select Controllers Step 3 - Select: • • • • • • Enhanced PLC-5 Controllers Ethernet PLC-5 Controllers ControlNet PLC-5 Controllers Protected PLC-5 Controllers EEPROM Memory Modules Replacement Batteries Select Controllers PLC-5 controllers are high-speed, single-slot controllers you can use for control and information processing.
32 Select Controllers Enhanced PLC-5 Controllers Cat. No. User Memory (words), Max Total I/O, Max 1785-L11B 8000 512 any mix or 384 in + 384 out (complement) 1785-L20B 16,000 1785-L30B Every PLC-5 controller offers built-in, configurable ports for Data Highway Plus (DH+) or Remote I/O. A DH+ connection supports remote programming and information access, in addition to peer-to-peer communication between the PLC-5, other controllers, and devices.
33 Select Controllers Ethernet PLC-5 Controllers The Ethernet PLC-5 controller integrates the Allen-Bradley architecture into an industry-standard EtherNet/IP system, offering a flexible and open solution. With the Ethernet PLC-5 controller’s built-in communication capabilities, your entire enterprise can use standard Ethernet or Internet connectivity to control and monitor production.
34 Select Controllers The ControlNet PLC-5 controller offers embedded ControlNet communication capabilities for control and information processing. The ControlNet network provides both I/O control and peer-to-peer communications on a 5 Mbps network, with repeatability and determinism. ControlNet PLC-5 Controllers You can have multiple ControlNet PLC-5 controllers on one ControlNet network, with each controller handling its own I/O on the network, and at the same time communicating with each other.
35 Select Controllers Protected PLC-5 Controllers The Protected PLC-5 controller lets you limit access to critical or proprietary areas of programs, selectively guard controller memory and I/O, or restrict use of controller operations. The distinctive safety-yellow labels on the controller identify the protected PLC-5 controller.
36 Back Up Controller Memory You can back up program files using an EEPROM module. Cat. No. (1) 1785-ME16 1785-ME32 1785-ME64 1785-CHBM Provides this amount of backup memory 16,000 words 32,000 words 64,000 words 100,000 words (1)Not for use with ControlNet PLC-5 controllers. Battery Replacement and Life Estimates Cat. No.
Select Chassis 37 Select Chassis Step 4 - Select Chassis: • With the number of slots you need • That meet your power supply requirements • That meet your panel size and space limitations The PLC-5 programmable controller requires a 1771 chassis to contain the various modules. Chassis are available in sizes of 1, 2, 4, 8, 12, and 16 module slots. The backplane provides a communication path between the I/O modules and either the controller or the I/O adapter module.
38 Select Chassis Mounting Dimensions Minimum Spacing Requirements for a Controller-resident Chassis Mount the I/O chassis horizontally. Allow 153 mm (6 in.) above and below the chassis. Allow 102 mm (4 in.) on the sides of each chassis. Allow 51 mm (2 in.) vertically and horizontally between any chassis and the wiring duct or terminal strips. Leave any excess space at the top of the enclosure, where the temperature is the highest.
Select Power Supplies 39 Select Power Supplies Step 5 - Select: • One power supply for each chassis The 1771 power supplies provide 5V dc power directly to the chassis backplane. These power supplies occupy one or two slots in a 1771 chassis and can provide up to 8 A per supply to the I/O chassis. These power supplies require no space outside the chassis, except for the 1771-P7P power supply.
40 Select Power Supplies Each ac input power supply generates a shutdown signal on the backplane whenever the ac line voltage drops below its lower voltage limit. It removes the shutdown signal when the line voltage comes back up to the lower voltage limit. This shutdown is necessary so that only valid data is stored in memory.
Select Power Supplies 1771-P4R, -P6R ac/dc 3 Units Backplane Current Load (A) 16 12 8 4 0 16 12 8 4 0 0 35 70 105 140 16 12 8 4 0 0 Real Power (W) 1771-P4R, -P6R ac/dc 4 Units Backplane Current Load (A) 150 200 50 100 150 0 200 75 150 225 300 Transformer Load (V A) = Real Power (W) x 2.
42 Select Power Supplies Notes Publication 1785-SG001B-EN-P - June 2006
Select Software Step 6 - Select: • RSLogix 5 Programming Software • RSLinx Software • RSNetWorx Network Configuration Software • RSLogix Emulate 5 Emulation Software • PLC-5 Controller and Training Software • ViewAnyWare Products 43 Select Software Your selection of communication modules and network configuration determines what software packages you need to configure and program your system. The PLC-5 controllers support multiple industry-standard programming languages.
44 Select Software Programming Software Use RSLogix 5 programming software to configure 1771 I/O and communication modules and to program the PLC-5 programmable controller. RSLogix 5 software offers relay ladder, structured text, function block diagram, and sequential function chart editors for you to develop application programs.
Select Software RSLinx Sotware 45 RSLinx software, 9355 series, is a communication server package that provides plant-floor device connectivity for a wide variety of applications. RSLinx software can support multiple software applications simultaneously communicating to a variety of devices on many different networks. RSLinx software provides a user-friendly graphical interface for navigating through your network.
46 Select Software Network Configuration Software Use RSNetWorx for ControlNet (9324-CNETL3) and RSNetWorx for DeviceNet (9324-DNETL3) software to configure and schedule tools for your ControlNet or DeviceNet networks. RSNetWorx software lets you create a graphical representation of your network configuration and configure the parameters that define your network. RSNetWorx for ControlNet software schedules network components.
Select Software RSLogix Emulate 5 Software 47 RSLogix Emulate 5 software (9324-RL5350END) is the emulation package for the PLC-5 programmable controllers. RSLogix Emulate 5 software used in conjunction with RSLogix 5 software lets you run and debug your application code while at your computer. In addition, RSLogix Emulate 5 software also lets you test HMI screens, developed in RSView32 for example, without the need to connect to a real controller.
48 Select Software PLC-5 Controller and Training Software Rockwell Automation offers several different levels of training for your PLC-5 programmable controller system.While most of these training aids are PLC-5 specific, the lessons and tools also apply to other platforms.
Select Software 49 1771 I/O Rack System Workstation The PLC-5 workstation simulator (ABTTDPLC1) is an engineering support tool that you can integrate into your training and development program. Designed for use with the Universal I/O Simulator, this rugged workstation precisely simulates the mid-size PLC-5 controller, and other programmable controller families.
50 Select Software ViewAnyWare Products ViewAnyWare products, together with Logix for control and NetLinx architecture for communication, make up Rockwell Automation’s Integrated Architecture strategy. The ViewAnyWare strategy combines Rockwell Automation’s expertise in Allen-Bradley electronic operator interface and industrialized PC hardware with Rockwell Software’s supervisory control software. Current ViewAnyWare products include: • • • • RSView Enterprise Series software.
Select Software 51 The following table describes available RSView Enterprise Series products. RSView Enterprise Series Product Line RSView Studio software RSView Machine Edition software RSView Supervisory Edition software Cat. No.
52 Select Software VersaView Industrial Computers and Monitors VersaView is a family of industrial computer and monitor solutions, comprised of integrated display computers, workstations, non-display computers, and flat panel monitors. VersaView products offer effortless management of changing technology, a rugged but cost-effective design, and easier product configuration.
Summary 53 Summary Use a spreadsheet to record the amount and type of devices your PLC-5 system needs. For example, this sample system could result in the PLC-5 system spreadsheet. Example PLC-5 System ControlNet Network Panel A Chassis 1 Panel A Chassis 2 Panel A Chassis 3 PanelView PLC-5 System Spreadsheet Device Number of I/O Points Needed Cat. No.
54 Summary As you select devices for your PLC-5 system, keep in mind the sections/steps in this selection guide:.
Summary 1 Chassis 2 3 4 Cat. No.
Notes
The PLC-5 controller supports multiple industry-standard programming languages. You can program logic in IEC 1131-based structured text, function block, and built-in ladder logic instructions. Instruction Set Instruction Family Description Relay-type The bit (relay-type) instructions monitor and control the status of bits. XIC, XIO, OTE, OTL, OTU,IIN, IOT, IDI, IDO Timer and Counter The timer and counter instructions control operations based on time or the number of events.
Allen-Bradley, ControlLogix, Compact I/O, CompactBlock I/O, Data Highway Plus, DH+, Encompass, FLEX Ex, FLEX I/O, MicroLogix, PLC-5, PanelBuilder, PanelView, PanelView Plus, Rockwell Automation, RSLinx, RSLinx Gateway, RSGuardian, RSLogix, RSLogix 5, RSLogix 500, RSLogix 5000, RSLogix Emulate, RSNetWorx, RSNetWorx for ControlNet, RSTestStand, RSTrainer, RSView Machine Edition, RSView, RSView Supervisory Edition, SLC 500, VersaView, and ViewAnyWare are trademarks of Rockwell Automation, Inc.
