CDN366 DeviceNet Gateway Application Notes
Table of Contents Revision........................................................................................................................... 3 Purpose:........................................................................................................................... 4 Hardware and Software Requirements:........................................................................... 4 Schematic Diagrams:..............................................................................................
Revision Initial Release ……………………………………………………………..…….
Purpose: This application note is intended to assist users to setup and configure the CDN366 DeviceNet ASCII gateway converter module with an Allen Bradley (AB)1747SDN DeviceNet master scanner for the SLC500 programmable logic controller (PLC) series. The users must have some basic knowledge of hardware and software. Hardware: CDN366, AB PLC, AB 1747-SDN modules. Software: RSLinx, RSNetworx, RSLogix500, and Microsoft Windows. The user must have a basic knowledge of DeviceNet specifications and principles.
1) CDN366 support documents … specs. manual, EDS files, examples www.mksinst.com/cgi-bin/product.exe?pid=cdn366 2) 1747-SDN DeviceNet Scanner Module: Installation Manual www.ab.com/manuals/io/1747/174758.pdf 3) Setup RSLinx, RSNetworx with 1747-SDN DeviceNet Scanner Module www.ab.com/manuals/cn/1747-um652b-en-p.pdf 4) SLC500 Instructions & Set Manual www.ab.com/manuals/cp/1747615.pdf 5) DeviceNet to RS232 Interface Converter Installation Instructions www.ab.com/manuals/cn/177056.
Allen Bradley SLC500 4 Slot Rack, 1746-A4 N 120VAC Slot 1 SLC502 DeviceNet PLC CPU Scanner 24vdc output Fuse 3A 1747-P1 120/240VAC 1747-L524 1747-SDN Neutral Comm. Slot 2 Slot 3 8 pt. Input 8 pt.Output module module 1746-IV8 1746-OB8 Comm. GND DeviceNet network 24VDC Power Supply Fuse 1A Fuse 6A + 120VAC 24VDC -GND PC Interface To PC RS232 25 Module Pin Serial Interface 1747-PIC For Used with RS232-PLC RSLogic Prog.
CDN366 Setup & Configurations: Prior to the setup and configuration of the CDN366 device, the PLC hardware (power supply, CPU, DeviceNet scanner, I/O modules), software (RSLinx, RSNetWorx & RSLogic500) and interface modules must be setup and configured first. (For further information on setup and configuration of the Allen Bradley PLC controller, please visit www.ab.com) In this particular example, the hardware and software were setup and configured based upon page 1 listing.
Register Electronic Data Sheet (EDS) File: In order to integrate the CDN366 to DeviceNet network, the CDN366 must be set up and configured first. CDN366 must be disconnected from the DeviceNet network before configuring the node address and baud rate. Set the DeviceNet baud rate to match with the network baud rate. Set the Mac ID to an unused node address. The example below shows that the CDN366 was set at Mac ID 01 (MSD=0, LSD=1), and DeviceNet network baud rate is at 125Kb.
In order to register the CDN366 on RSNetWorx, click on “Tools” and select “EDS Wizard”. Click on “Next>” and the “Options” menu is prompted.
Select “Register a single file” and enter the EDS file name on the white box.
The “EDS File Installation Test Results” menu is prompted, click on “Next>”. The “Change Graphic Image” menu is prompted. Select CDN366 and click on “Change icon”. Select another icon to replace current CDN366 icon. Click “OK” to exit “Change Icon” menu. After it is changed to a new icon, click on “Next>”.
The “Final Task Summary” menu is prompted, click on “Next>” The “Completing the EDS Wizard” menu is prompted. Click on “Finish” to complete the EDS Wizard. On RSLinx and RSNetWorx, click on the “Online” icon to re-scan or browse the network. The CDN366 should be identified on the RSLinx and RSNetWorx network. If after registering the EDS file, the CDN366 is unrecognized on the DeviceNet network (see the Troubleshooting Guide on page 35).
CDN366 Parameter Configuration: Now, the CDN366 is on the DeviceNet network. To change the CDN366 parameters, ensure that the CDN366 device is not on the DeviceNet master scanlist. To edit the parameters on CDN366, point the mouse to CDN366 icon and right click.
When the sub-menu is prompted, click on “Properties” and the “CDN366” menu appears. Select “Parameters”, and the “EDS Editor” sub-menu is prompted. Click on “Upload”, and the default parameters will upload from CDN366 device.
Download parameters to device Upload parameters from device Monitor Parameters Help for the selected parameter Restore default parameters The CDN366 has eight (8) Rx/Tx instances. The total number of parameters are 155. On the “Groups” selection, click on the “down arrow key” and then select “Serial Stream Object”, “Rx Inst 1” or “Tx Inst 1”.
Change Parameter Setting Using RSNetWorx: The CDN366 must be offline (not on Scanlist) to change any parameters. Some of the parameters cannot be change, but can be read (see CDN366 DeviceNet Specifications for details). Before making the parameter change, always upload the current parameters from the CDN366 device. 1) In the “Parameters” menu, double click on the parameter, and enter the new value. Then press “Enter” to accept the new value.
Serial Stream Object Parameters (Class Code 64): 1) Baud Rate: The serial channel RS232 baud rate ranges from 300 ~ 57600 bits/sec. The acceptable baud rate are 300, 1200, 2400, 4800, 9600, 19200, 38400, and 57600. The baud rate should be set to match the serial connection. 2) Data Bits: The number of data bits can be selected at 7 or 8 bits. The data bits should be set to match the serial connection. 3) Parity: The parity bit can be selected at None, Odd, Even, Mark or Space.
6) Delimiter Mode: The delimiter is used to determine when the a complete packet is received from the RS232 side (see DeviceNet for further info.). There are three functions in delimiter mode: List, Timeout and Length. List – select “List” when using the injunction with Pre and Post Short String data type format. The Pre/Post delimiters can be set in ASCII characters.
Length – When a value (byte range from 1~255) is set in the Packet Length, (Class=64, Instance=1, Attribute=14) the data packet is fixed based upon the Packet Length. As the data packet receives from a poll response, the data packet is complete as number of bytes sent is equal to the byte value set in Packet Length. Packet Length – Specifies the number of bytes (1~255 bytes) to wait for before determining the data packet is complete.
Serial Receive Object Parameters (Class Code 65): There are eight identical receive (Rx) instance parameters which can be set in CDN366. This section will review one of the eight receive instance parameters. These parameters can easily be changed using RSNetWorx. When using RSNetWorx to upload the parameters, first go to “Groups” and select “Rx Inst 1”. 10) Receive Toggle: This parameter is read only. When new data has been received, bit 0 is toggle (see Receive Handshaking & I/O Mapping).
13) Date Type: When 194 or 198 is entered for Data Type (class=65, instance=1, attribute=9), then one byte will be allocated for Data Size (class=65, instance=1, attribute=10). When 195 or 199 is entered for Data Type, then two bytes will be allocated for Data Size. When 202 is entered for Data Type, then four bytes will be allocated for Data Size. Decimal 194 195 198 199 202 218 Hex.
18) Enable: When the enable search receive string is set to 1, the current instance will be used to process the incoming receive message (packet) to extract the data specified in Data Type. This attribute should be disabled for all unused instances. 19) Sync Enabled: When sync enable is set to 1, the CDN366 will not respond with new serial data until the value in the Receive Acknowledge bit has been toggled. Enabling this attribute ensures that the master scanner module does not miss data between polls.
22) Transmit Mode: (class=66, instance=1, attribute=6) Bits 5~7 are unused. The transmit mode is used for transmitting the data in conjunction with strings before and/or after data. The String1 (class=66, instance=1, attribute=7) is a list of ASCII characters (bytes) to be transmitted. The String2 (class=66, instance=1, attribute=8) is a list of ASCII characters (bytes) to be transmitted. Example: Set String1 to start of text (STX) and String2 to end of text (ETX) with carriage return (CR).
Decimal 194 195 198 199 202 218 Hex. 0xC2 0xC3 0xC6 0xC7 0xCA 0xDA Date Size (byte) Value Range Data Type 1 -128 ~ 127 SINT (signed 8-bit integer) 2 -32768 ~ 32767 INT (signed 16-bit integer) 1 0 ~ 255 USINT (unsigned 8-bit integer) 2 0 ~ 65535 UINT (unsigned 16-bit integer) +1.175E-38 ~ +3.4028E+38 4 REAL (32-bit floating point value) Short_String Set by data size attribute, Max.
28) Data in Poll Command: (class=66, instance=1, attribute=15) When data in the poll command is set to 1 (enabled), the Transmit Data packet (bytes) of a particular instance is added to the Poll Consume Size. Any particular Tx instances, which are unused must be disabled (Not in Poll Command.) The data in the poll command attribute must be enabled in order to establish an I/O connection with the master scanner (see Output Memory Table of A-B 1747-SDN mapping.
toggle from 0 to 1. The output M-File mapping is similar to discrete inputs mapping. When the short-string data type is used in instance 1, the Receive Data Size located in Input I:1.2 word bits 0~7. The Receive Data Size indicates the number of ASCII data bytes received from the RS232 serial connection by the CDN366. When RS232 serial data is received, the CDN366 counts the total ASCII data characters (bytes) in the message packet and places the value in starting at word I:1.2, bits 0~7.
allocated for three characters (bytes) for serial receive. The total is ten bytes for PLC I/O mapping. Input Memory Table of Allen Bradley 1747-SDN DeviceNet Master Scanner Module 1 Word Addressing I/O Data 1 byte = 8 bits 1 byte = 8 bits Memory 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Table 0 Reserved Read-Only I:1.0 I:1.1 Receive (Rx) Toggle: bits 8~15 Inst1=bit8, Inst2=bit9, .., Inst8=bit15 Transmit (Tx) Acknowledge: bits 0~7 Inst1=bit0, Inst2=bit1, .., Inst8=bit7 I:1.
The Transmit Acknowledge byte for instances 1~8 is mapped in Input I:1.1 word bits 0~7. Each transmit acknowledge bit corresponds to an instance of the transmit object. When data is sent from PLC to the RS232 serial connection, the Input I:1.1 bit 0 (Instance 1) toggles when the data is transmitted by the CDN366. Bit 0 toggles between 0 and 1. Instances 2~8 are setup similarly mapped to bits 1~7.
Example: The table below shows a short string data type with two transmit instances that are mapped into discrete/M-file Outputs I/O. Each instance is allocated for three characters (bytes) for serial transmit. The total is ten bytes for the PLC I/O mapping. Output Memory Table of Allen Bradley 1747-SDN DeviceNet Master Scanner Module 1 Word Addressing I/O Data 1 byte = 8 bits 1 byte = 8 bits Memory 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Table 0 Reserved Read-Only O:1.0 O:1.
Mapping the Poll I/O Connection to AB-1747-SDN: Before using the RSNetWorx to map the poll I/O connection to 1747-SDN DeviceNet master scanner, the total number of bytes of the Poll Produce Size & Poll Consume Size must be determined. The format of the poll response and poll command are listed below: Poll Response: [TxAck bits1~8][RxToggle bits1~8][Rx Data Inst.1] …[Rx Data Inst.8] Poll Command: [TxToggle bits1~8][RxAck bits1~8][Tx Data Inst.1] …[Tx Data Inst.
6) If the “EDS Editor” menu is not prompted then click on the “Upload” icon to upload the latest parameters to the CDN366. 7) Click on “All Parameters” and select “Rx Inst 1”. 8) Click on “(Rx Inst-1) Data Size” and enter 15. 9) Since the example is short-string data type. Click on “(Rx Inst-1) Data Type” and enter 218. 10) Click on “(Rx Inst-1) Data in Poll Command” and set “Data in Poll”. 11) Disable “Rx Inst-2 to Rx Inst8” serial receive by setting “Data not in Poll”.
18) In “Groups:” select “Serial Stream Object” 19) The “Poll Produce Size” and “Poll Consume Size” are automatically adjusted based on the new configuration. The 17 and 4 bytes are needed to map to 1747-SDN module. 20) In RSNetWorx, right click on the CDN366 icon. 21) Double click on “Properties” 22) The “1747-SDN Scanner Module” menu is prompted. 23) Click on “Scanlist” and “Scanner Config. Applet”. A menu is prompted. 24) Click on “Upload” to upload parameters from scanner module.
25) Move the CDN366 from the box “Available Devices” to the box “Scanlist”. 26) Click on “Edit I/O Parameters” 27) The byte values from “Poll Produce Size” and “Poll Consume Size” are 17 and 4. 28) Enter 17 on box Rx Size (bytes). 29) Enter 4 on box Tx Size (bytes). 30) Click on “OK”. 31) User preference, “Do You want to Automap this data?” In this particular example, click on “Yes”. If “No”, user must select to manually map I/O in the memory tables.
32) After selecting Automap, the discrete Input/Output tables should look the same as above. 33) The Advance I/O Mapping shows current mapping configurations. The memory Map To is Discrete (not M-file, based on user preference/applications). The data map starts in the memory register of Word 1, Bit 0. The Output Bit Length is 32 (equivalent to 4 bytes), and the Input Bit Length is 136 (equivalent 17 bytes). Click on “Close” to exit. Click on “Apply”.
Basic Troubleshooting Problem Could be caused by 1) DeviceNet master scanner did not recognize the device. 1) EDS file is not registered. 2) DeviceNet master scanner did not recognize the device after loading the EDS file. 2) Device minor and major revisions do not match EDS file. Verify EDS file minor & major revisions. 3) Device did not appear on the DeviceNet network. 3) Verify wiring connection & correct voltage. Verify node address is not occupied by anther device.
ASCII Table Non-Printing Characters Name null start of heading start of text end of text end of xmit enquiry acknowledge bell backspace horizontal tab line feed vertical tab form feed carriage feed shift out shift in data line escape device control 1 Ctrl Dec Hex Char Dec Hex Char Dec Hex Char Dec Hex Char char ctrl- @ ctrl- A ctrl-B ctrl-C ctrl- D ctrl-E ctrl-F ctrl- G ctrl- H ctrl-I ctrl-J ctrl- K ctrl-L ctrl- M ctrl- N ctrl- O ctrl-P ctrl- Q device control 2 ctrl-R device control 3 ctrl-S de
end of medium ctrl- Y substitute ctrl-Z escape ctrl-[ file separator ctrl-\ group separator ctrl-] record separator ctrl-^ unit separator ctrl-_ 25 19 EM 57 39 9 89 59 Y 121 79 y 26 1A SUB 27 1B ESC 28 1C FS 29 1D GS 30 1E RS 31 1F US 58 59 60 61 62 63 3A 3B 3C 3D 3E 3F : ; < = > ? 90 91 92 93 94 95 5A 5B 5C 5D 5E 5F Z [ \ ] ^ _ 122 123 124 125 126 127 7A z 7B { 7C | 7D } 7E ~ 7F DEL 37
CDN366 Enclosure Dimensions 1.25 0.65 0.45 3.80 4.30 3.30 0.50 0.12 Mtg. Holes (2) 0.19 DIA. 1.225 1.225 0.725 0.625 DIA. On Case Wall 0.70 0.542 1.
CDN366 Template Class Instance Attribute Default Setting Unit Comments 39
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Packing Data PK Installation Instructions DeviceNet RS 232 Interface Module (Catalog Number 1770-KFD and 1770-KFDG) To the Installer The 1770-KFD module is a portable RS-232 communication interface that provides a host computer access to a DeviceNett network.
2 DeviceNet RS-232 Interface Module Purpose Use this document to learn how to install and use the DeviceNet RS-232 interface module. Audience Read this manual before you install or use the DeviceNet RS-232 interface module. You should be familiar with DeviceNet technology.
DeviceNet RS-232 Interface Module 3 European Union Directive Compliance This product has the CE mark and is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.
4 DeviceNet RS-232 Interface Module Handling the Module ATTENTION: This RS-232 module uses CMOS technology, which is highly sensitive to electrostatic discharge (ESD). ESD may be present whenever you are handling the module. Take these precautions to guard against electrostatic damage: • Avoid touching the interface connector pins on the RS-232 module. • If the module is not in use, store it in the anti-static bag in which it was shipped.
DeviceNet RS-232 Interface Module 5 Contents of Your 1770 KFD Order With this package you should receive: 1770 KFD driver disk 1770 KFD module DIN rail mounting brackets unsealed DeviceNet terminal connector 6 ft, 9 pin D shell RS 232 null modem cable KFD instructions DIN rail mounting bracket screws • • • • • • • one DeviceNet RS-232 interface module, catalog no.
6 DeviceNet RS-232 Interface Module Available options: • global 9V ac power supply adapter (90 – 260V ac), which comes with catalog no. 1770KFDG/A • domestic 9V ac power supply adapter (120V ac), which you can order separately as catalog no. 1787USADPTR/A Each adapter connects to the power supply connector on the 1770-KFD module. See page 12 for additional information. Publication 1770 5.
DeviceNet RS-232 Interface Module 7 • an 8 ft, 5-pin DeviceNet unsealed probe cable (catalog no. 1787-PCABL), which you can order separately Probe cable • a 6 ft, sealed T-tap DeviceNet connector cable (catalog no. 1787-TCABL), which you can order separately T tap cable This cable connection lets the 1770-KFD module and a device connected to the module in a point-to-point configuration draw power from the network. • a 6 ft, unsealed-to-sealed DeviceNet drop cable (catalog no.
8 DeviceNet RS-232 Interface Module Introducing the 1770 KFD Interface Module The 1770-KFD module, described in Figure 1, is a portable RS-232 communication interface that provides a host computer access to a DeviceNet network.
DeviceNet RS-232 Interface Module 9 Communicating on DeviceNet The 1770-KFD module lets you communicate: • point-to-point (host computer directly to device via the 1770-KFD module) The host computer uses a point-to-point connection for node and/or parameter configuration.
10 DeviceNet RS-232 Interface Module The 1770-KFD module performs data transmission, management, and local network diagnostics. Allen-Bradley DeviceNet Manager software, 1787-MGR, manages data transmission and reception through the 1770-KFD interface module from a personal computer (Windowst operating system). Mounting the 1770 KFD Module You can mount the module on a DIN rail. 1. Use the four screws to attach the two mounting brackets to the back of the module. 20296 Publication 1770 5.
DeviceNet RS-232 Interface Module 11 2. Snap the mounting brackets onto the DIN rail. 20297 Publication 1770 5.
12 DeviceNet RS-232 Interface Module Supplying Power to the 1770 KFD Module The 1770-KFD module can be powered from either an external power supply or from a DeviceNet network. Supplying Power via AC Wall Adapter Figure 2 shows the power supply, catalog no. 1787-USADPTR, that takes 120V ac and outputs 9V dc at 1 amp. Figure 2 Domestic 9V ac wall adapter 20299 Figure 3 shows the global power supply, which takes 90 – 260V ac, 47 – 63 Hz, and outputs 9V dc.
DeviceNet RS-232 Interface Module 13 Figure 3 Global 9V ac wall adapter 20300 Important: You must supply the cable between the adapter and the outlet. Supplying Power via Network The DeviceNet network can power the 1770-KFD module. Important: When the module is connected to a powered DeviceNet network, the network connection overrides the external power supply. Supplying Power to a Device The module can supply power to a device in a point-to-point connection.
14 DeviceNet RS-232 Interface Module Connecting Cables via RS 232 to a Computer Use the wiring key molded on the bottom of the 1770-KFD module when connecting the RS-232 cable to a computer.
DeviceNet RS-232 Interface Module 15 RS-232 Cable Connections (via 9-pin serial port connector) These pin numbers correspond with these connections: pin number abbreviation description direction 1 DCD data carrier detect in 2 RXD receive data in 3 TXD transmit data out 4 DTR data terminal ready out 5 GND signal ground - 6 DSR data set ready in 7 RTS request to send out 8 CTS clear to send in 9 RI ring indicator in Connect the 1770-KFD module to a computer by using t
16 DeviceNet RS-232 Interface Module Using the Interface Module with a Portable Computer Some portable computers have power-saving modes that power down the serial ports during inactive periods, occurring most often when batteries power the PC. The serial-port power-saving feature causes the RS-232 interface module to go offline and to cease communication with DeviceNet Manager. You should disable the serial-port power-saving feature to use the RS-232 interface module with DeviceNet Manager.
DeviceNet RS-232 Interface Module 17 Connecting Cables via DeviceNet Follow these steps to connect the 1770-KFD module to a DeviceNet network: 1. Connect the DeviceNet cable (trunkline or dropline) to the unsealed DeviceNet terminal connector. DeviceNet cable (trunkline or dropline) red white shield unsealed DeviceNet terminal connector blue black 20295c 2. Connect the terminal connector to the 1770-KFD module.
18 DeviceNet RS-232 Interface Module Connecting the 1770-KFD Module to DeviceNet Devices (Point-to-Point) You can connect the module to a sealed or an unsealed device in a point-to-point configuration. Connect to an unsealed device in one of two ways: • use a 1787-PCABL probe cable 1770 KFD Probe Cable Power Supply Generic Unsealed Device 20409a • use DeviceNet drop or trunk cable 1770 KFD DeviceNet Drop or Trunk Cable Generic Unsealed Device Power Supply 20409b Publication 1770 5.
DeviceNet RS-232 Interface Module 19 Connect to a sealed device in one of three ways: • use a 1787-TCABL T-tap cable (and power supply) 1770 KFD T tap Cable Power Supply Generic Sealed Device 20409c • use a 1787-TCABL T-tap cable (and draw power from the network) Network 1770 KFD T tap Cable Generic Sealed Device 20409d Publication 1770 5.
20 DeviceNet RS-232 Interface Module • use a 1787-MCABL unsealed drop cable (and power supply) 1770 KFD T tap Unsealed Drop Cable Power Supply Generic Sealed Device 20410a Probing a Network You can probe a sealed or an unsealed network with the 1770-KFD module. Probe an unsealed network in one of two ways: • use a 1787-PCABL probe cable 1770 KFD Probe Cable Generic Unsealed Device 20766-M Publication 1770 5.
DeviceNet RS-232 Interface Module 21 • use a DeviceNet terminal connector 1770 KFD 20767-M Probe a sealed network in this way: • use a 1787-MCABL unsealed drop cable Network 1770 KFD Unsealed Drop Cable 20410e Publication 1770 5.
22 DeviceNet RS-232 Interface Module Installing the 1770 KFD Driver If you are using a WinDNett-compatible application, you must install the 1770-KFD driver. Follow these steps: 1. Start Windows 3.1, Windows 95, or Windows NT. 2. Select Run from the File menu. 3. On the command line, type a:\setup as shown here: 4. Press OK. 5. Follow the instructions in each dialog box until you see the message: Installation Complete Publication 1770 5.
DeviceNet RS-232 Interface Module 23 Interpreting Status Indicators The three status indicators on the module give you information about your network and its connections. Figure 4 identifies each status indicator.
24 DeviceNet RS-232 Interface Module Module Status Indicator condition status indicates off no power no power applied to device solid green device OK device is operating in normal condition; KFD module is on line, i.e.
DeviceNet RS-232 Interface Module 25 Specifications communication rate RS 232 selectable rates: • 1200 baud 19,200 baud • 2400 38,400 • 4800 57,600 • 9600 DeviceNet selectable rates: • 125K baud • 250K • 500K function to monitor and configure devices on DeviceNet network location anywhere via personal computer communication port one 9 pin RS 232 D shell cabling RS 232 cable; see cable diagrams power requirements: • ac wall 9V @ 1 amp • DeviceNet connector 11 - 25V @ (700mA - 300mA) ambient t
26 DeviceNet RS-232 Interface Module Support Services At Allen-Bradley, customer service means experienced representatives at Customer Support Centers in key cities throughout the world for sales, service, and support.
DeviceNet RS-232 Interface Module 27 Publication 1770 5.
DeviceNet is a trademark of the Open Device Vendors Association (ODVA). WinDNet and PLC-5 are trademarks of Allen-Bradley Company, Inc. Windows and Windows NT are trademarks of Microsoft. Worldwide representation.
