Allen-Bradley Interfacing

Transcription

1 Interfacing ENGINEERING REPORT No: Introduction This rept describes interfacing the modem to s automation systems programmable controllers. These programmable logic controllers (PLC) consist of the PLC-5 series, PLC-2 series,, and MicroLogic family of controllers. Utilities ELECTRNIC SYSTEMS TECHNOLOGY INC. A:\ INSTALL The modem suppts the DF1 communications protocol. This allows the user to enable a READ WRITE message instructions to transfer data between PLCs. Once the is configured f DF1 protocol, the will read the destination address in the protocol and send the infmation to the and PLC with that address. The can route infmation through multiple s to extend the range of the netwk, transparent to the PLCs (see Figure 1). The modem is constantly being integrated into new automation systems. If you do not see an application listed in this rept, please call the facty to discuss your application with our engineering staff. PLC-5 SLC-5/03 SLC-5/03 SLC-5/03 SLC-5/03 Figure 1: Typical System Diagram Figure 2: Installation Diagram Installing Utility Software The Utility Software is used f the setup and programming of the. DOS 1. Boot-up the computer using DOS. 2. Insert the 3.5 inch Utility Program into drive A. Reference Figure Select drive A from DOS by typing A: and press RETURN. 4. Type INSTALL followed by pressing RETURN. 5. The Utility and Diagnostic Programs will be loaded on to your computer's hard drive. WINDOWS 1. Insert the Utilities Disk in drive A, type the appropriate drive f your system. 2. Select RUN from the File menu. 3. Type A:\install on the RUN line. 4. Follow the procedures in the installation program. 5. Remove the Utility Program from drive A and ste in a safe place. RUNNING THE PROGRAM 1. To run the program, type EST-U followed by a RETURN. Figure 3 shows an example of the menu of the Utility program. If you see this menu, you have successfully completed the installation of the Utility software. Engineering Rept Page 1 Revised: 21 Jul 99

2 Engineering Rept Setup Electronic Systems Technology Inc. WIRELESS MODEM COMMAND CENTER Terminal Emulation Setup Programming PLC Applications Diagnostic Programs Product Infmation Site Survey Infmation About Quit Use to manually program communicate to your modem with this computer. Figure 3: Utility Main Menu This section covers the basics of operating the wireless modem. If this is your first experience with the wireless modems you are unclear on how to set the frequency, squelch, test communication, the Setup section will guide you through the basics of wireless communication. Note: It is recommended that all new users complete all steps in the Setup section befe proceeding. CONTROL SYSTEM DEVICES AND PROTOCOLS ABB Kent-Tayl Acromag AIT Programming Barrington Foxbo General Electric Johnson Controls Moe Products Modicon Omron Opto-22 Phoenix Contact PLC Direct (Koyo) Siemens Square D TCS Systems 6000 Texas Instruments Toshiba Westinghouse PLC Not Listed Exit To Main Menu Configure the to wk with ALLEN BRADLEY PLC and SLC products DF1 Full duplex, half duplex, and full to half duplex protocols are suppted. Figure 4: PLC Programming Menu RS-232C, 422, and 485 Setup Dip Switches S/N ELECTRONIC SYSTEMS TECHNOLOGY KENNEWICK, WA USA PATENT NO. 4,665,519 USA ANTENNA Antenna (TNC) FCC ID: ENP53E ESTEEM 95 CERTIFIED TO COMPLY WITH THE LIMITS FOR A CLASS B COMPUTING DEVICE PURSUANT TO SBPART J OF PART 15 OF FCC RULES SEE IN- STRUCTIONS IF INTERFERENCE TO RADIO RECEPITON IS SUSPECTED. MADE IN USA RS-232C, 422, and 485 Input/Output (25 Pin DB Ccnnect) 12 VDC Input Power (2 Pin Molex) POWER +12 VDC Figure 5: Rear View Programming The Software f DF-1 protocol. This section will guide you through the steps of programming the f your application. This section is written with the assumption that you are familiar with the operation of the and have a layout of your site to write down the addresses. If you are unfamiliar with the operation of the, complete the Setup section of the utility. Addresses f the PLCs in your site may be dictated by the addressing. Complete all steps in this Engineering Rept befe defining the PLC addresses. An example three node site is shown in Figure 6. The line of site is blocked from the Water Treatment Plant to the Pump House by a large hill. The at the Elevated Tank can be used to digi-repeat infmation from the Water Treatment Plant to the Pump House transparently to the DF1 protocol. This is an example of when the repeater configuration would be used. Water Treatment Plant- /PLC Address 1 Elevated Tank- /PLC Address 0 Pump House- /PLC Address 2 Figure 6: Simple Application Engineering Rept Page 2 Revised: 21 Jul 99

3 Engineering Rept This section contains example site layouts with repeaters. All diagrams and input examples, throughout this section, pertain to these example site layouts. When the utility prompts you f infmation on your site, use the example site layout infmation to help describe the terms used in the utility. If your site uses repeaters, always start programming with the Master. This will define the addressing f all PLC/ pairs f your site. 1. Select PLC Applications from the main menu (Reference Figure 3). 2. From the Control System Devices menu select Allen- Bradley (Figure 4). 3. The Welcome Menu will be displayed. After reading the infmation press Enter to continue. 4. The screen f selecting the process type will be displayed. Select the process type of addressing and press the CONTROL key and the Enter key together (CTRL-Enter). Note: The uses different addressing in their PLCs. Verify the type of process you are connecting to the modem befe proceeding. When using both types of process addresses in your site, be alert to which processs require Octal and Decimal addressing and program the attached to match. 5. Select the method of communication between processs. The most efficient method of communication is full-duplex. Note: The CONVERSION mode should only be used when a full-duplex device (i.e. PLC-5) is communicating with a half-duplex only device (i.e. RTU-1000). 6. Select the method of err detection that is configured in the serial device (i.e. Pt-0 on the process, KE module, etc.) Note: The Micro Logic controller only suppts CRC err checking and Full Duplex communication. 7. If the DF1 pt is not configured f hardware handshaking, select NO. If the DF1 pt is set f hardware handshaking you are unsure, select YES and press CTRL-Enter. Note: Pressing F1 in this menu will display the pinouts of the serial cables. Figures lists all the current cable configurations. Unit Add. #1 #2 #3 0-1 None None None None None None None None None Figure 7: Sample Configuration 8. Any PLC/ pair in the netwk that has the ability to initiate communication to other PLCs needs to be defined as an master. This command does not limit the PLC to a Master-Slave relationship, but it will instruct the to read the destination address from the message block. If the PLC is initiating communication to me than one PLC in the netwk, Press YES and CTRL- Enter. If the PLC is only responding to a message, Select NO and proceed to Step This section will program the address to the. Enter the address of the and PLC. The address of the and PLC should be the same. If you are programming the Master modem in a site with repeaters, select an arbitrary address such as 0 and proceed with the setup by pressing CRTL-Enter. Note: The addressing of the PLC and modems in your site will be defined by the repeater configuration. The address that you select f your Master may need to change depending upon the repeater configuration table. If you selected Octal addressing in step 4, the Octal address that you type into the box will be displayed in Decimal in the address on the Setup Program box (on the right side of the screen). 10. The modem has the ability to allow multidropped PLCs on a Data Highway Ethernet line to share one modem. This is a special setup of the modem called Grouping and is covered in the Grouping section of this rept. If your system does not have multi-dropped PLCs select NO and CRTL-Enter to proceed. 11. This screen asks if repeaters are needed. Look at your site layout and determine if you will be using repeaters. If you are using repeaters in the netwk, you will need to configure a repeater table f the Master only. The Master is the connected to the PLC that is initiating communication to remote PLCs through other remote stations. Do not program the repeater configuration in the repeating s the remote s. If you are programming a remote station in a repeater netwk, a repeater station Engineering Rept Page 3 Revised: 21 Jul 99

4 Engineering Rept not using repeaters in your netwk select NO and CTRL-Enter. Proceed to step If repeaters are required, select YES and CTRL- Enter on the repeaters screen. Refer to the following examples f guidance: 2 Example 1: Let s start with a very easy repeater configuration. Figure 6 would have 1 repeater route and the maximum number of PLC s would be 2 (including it s own address). Press CTRL-Enter and a repeater list shown in Figure 7 will be displayed. To read the repeater configuration table, the addresses listed on the left column will be the /PLC addresses used in the site. The three columns to the right of the Unit Address column will define the address of the s that will be used as repeaters in the netwk. F example, refer to Figure 7 and note that the first series of numbers (0-1) are direct from the Master Station. Of those two addresses (0-1) the address of 0 is reserved f the repeater address (see the second column #1). Looking at the second row of numbers from the top, you will see that address 2-3 will use /PLC address 0 as a repeater. Note that the addressing in Figure 6 cresponds to the repeater configuration table in Figure 7. Example 2: Figure 8 shows a complex, 13 node site with four (4) repeater routes. This example will illustrate the terms used throughout the utility and how the crespond to the stations in your site. Note: A repeater route consists of any in the netwk that repeats infmation to another modem. Enter the maximum number of repeater routes in the repeater routes box. In this example the maximum number of repeater routes would be four (4) Route Master Station Route Route 1 Route Figure 8: Sample Routing Enter the maximum number of addresses through any repeater route the number of direct addresses (direct repeaters included) plus the master, whichever is greater. Type this value in the maximum address block. In Example 8 the maximum number of addresses through any repeater route would be three (3) (see route #3, Figure 8), but the number of direct address plus the master would be five (5). Select the larger of these two numbers (5) and press CTRL-Enter. Unit Add. #1 #2 # None None None None None None None None None None None None None None None Figure 9: Sample Configuration List #2 A repeater list shown in Figure 9 will be displayed. To read the repeater configuration table, the addresses listed on the left column will be the /PLC addresses used in the site. The three columns to the right of the Unit Address column will define the address of the s that will be used as repeaters in the netwk. F example, refer to Figure 9 and note that the first series of numbers (0-19) are all direct from the Master Station. Of those twenty addresses (0-19) the addresses 0, 5, 10, and 15 are reserved f repeater addresses (see the second column #1). Looking at the second row of numbers from the top, you will see that address will use /PLC address 0 as a repeater (see Figure 8, route 2) and /PLC address will repeat through address 5 (see Figure 8, route 1). To use multiple repeaters, (see Figure 8, routes 3 and 4) follow the repeater configuration chart to determine addresses of the repeater s. Notice that the first address in any group that uses a repeater (address in left column) will be the following repeater group s repeater address. Look at Figure 9 and notice that the second group of addresses saved f repeaters ( #2, Figure 9) 20, 25, 30, and 35 are the first address in group from Number #1. F example, addresses repeat through /PLC addresses 0 (first repeater) and 20 (second repeater) (see Figure 8, route 4). Use the configuration table f addressing the remote PLC/ in your site. Proceed to step 14. Engineering Rept Page 4 Revised: 21 Jul 99

5 Engineering Rept 13. If you are not programming the master in a repeater netwk, the destination address screen will be displayed. Type in the address the address path where the will send data. F example, refer to Figure 8. If you were programming the at address 26, your destination address would be 1 with the repeater address of 5. If you were programming address 60, your destination address would be 1 with address 40 as the first repeater, 20 as the second repeater, and address 0 as the third repeater. Type the destination address and CTRL-Enter. 14. The Save Menu will be displayed (Figure 10). Select Save to Connected. This will save your parameters to your s non-volatile memy. After the program has been saved, press ESC to return to the Control System Devices Menu. Note: The specific program you are saving will be displayed on the right hand side of the screen in the Setup Program box. You can save these parameters to disk f later use. ALLEN-BRADLEY Saving list of commands Save To File Save To Connected Save To Remote Exit to Menu Please select a destination After the protocol has been programmed into the, Bit 8 on the RS-232 setup switch will need to be set ON, and the reset. Figure 10: Save Menu 15. Set Bit 8 (Switch 8 on the, Figure 5) to ON. Bit 8 enables the Auto-Connect feature of the. Configure the RS- 232 Setup Switch to the parameters that match the DF1 pt. F complete RS-232 setup table see Figure 13. Note: When the is powered up the T/E will blink at a two per second rate. When the modem has a valid connection, the T/E light will go solid. 16. Interface the to the controller using one of the cables listed in Figures Several sample configurations and command list are included at the end of this rept (Figures 20-26). Not every configuration can be listed. If you have a question as to your specific application, please contact the facty f customer assistance. 17. Repeat these steps f all s in your site. Ensure that each has a different address and all s are on the same operating frequency. Set the receiver squelch to as high a setting that will keep the RX led (Front panel of the ) off during periods of no transmission. Grouping The modem has the ability to allow multidropped PLCs on a Data Highway Ethernet line to share one modem. This is a special setup of the modem called Grouping. If you are linking several multi-dropped PLCs to one, enter YES and CTRL-Enter. Data-Highway+ Group 1 Address 5 Figure 11: Sample Grouping Configuration Example: Enter the maximum number of PLCs attached to the. The maximum number of PLC s in this example would be 5 (Figure 11, Group 2). Press CTRL- Enter and the repeater screen will appear. If you are not using repeaters do not need me than one repeater route, select NO and CTRL-Enter. If me than one repeater is needed, select YES and CTRL-Enter (go to step12 f repeaters). Note that Figure 11 does not need me than one repeater and select NO f this example. A group destination table, as shown in Figure 12, will be displayed. Unit Add Address 5 Address 6 Address 7 Master Address 0 #1 #2 Address 10 Address 11 Address 12 Address 13 Address 14 Group 2 Address 10 #3 0-4 None None None # 5-9 None None None # None None # None # None None None Figure 12: Sample Group Destination Table Note: The grouping command in the modem will use the repeater configuration to create groups and always has at least one repeater route (see Figure 12, third row from the top). To read the group destination table, first look at the address in the left column. These are the and Data-Highway+ Engineering Rept Page 5 Revised: 21 Jul 99

6 Engineering Rept PLC address f your system. The address with the # sign next to it is the address of the and all addresses following are the PLC address in the group. Look at the first group of addresses in Figure 12 (#5-9) and Figure 11 (group #1). PLC addresses 5-9 will all communicate to the Master modem through address 5. Look at the group 2 in Figure 11. Note that PLC address are communicating through address 10 and address 5 as a repeater. Note: F explanation on how to read a repeater configuration, go to step 12 of this rept. Use the group destination table to address the PLCs and s f your site. Note: F further explanation on Grouping, Press F1 and a detailed explanation of the procedure will be displayed. If Octal addresses were selected in step 4, Octal address will be displayed in the tables. Programming Notes Listed below are the discrete commands that are enabled in the when the command is enabled: A_BCTRL = ON Programs the following commands. FULL_BCC = Full Duplex with BCC err checking FULL_CRC = Full Duplex with CRC err checking HALF_BCC = Half Duplex with BCC err checking HALF_CRC = Half Duplex with CRC err checking CONV_BCC = Half to Full Duplex with BCC err checking CONV_CRC = Half to Full Duplex with CRC err checking OFF = Disables protocol and sets all values in the to facty default RS-232/422 Setup Baud Rate Select Parity Select Bit Bit On Off Off None Off Off 4800 Off On Off None Off On 2400 On On Off Odd On Off 1200 Off Off On Even On On 600 On Off On 300 Off On On 110 On On On Data Bits Auto Connect Bit 6 7 Bit 8 5 Off Off Enabled On 6 Off On Disabled Off 7 On Off 8 On On Figure 13: RS-232/422/485 Setup Table AUTOLF = OFF Disables auto line feeds ECHO = OFF Disables echo EDIT = OFF Disables edit functions MULTCONN = ON Enables multiple station connect PROMPT = OFF Disables prompts SETMODE = ON Enables transparent mode TYPSYS = OFF Disables system and err messages XSFLOW = OFF Software flow control disabled The following commands are adjusted during the setup of the modem f DF1 communications protocol. F a complete description of each command and its use in the system, refer to the users manual. ADDress XXX = Sets the unique address of the (The XX specifies an Octal address) SETCon XXX = Sets the setconnect address PLC_MAST On/Off = The will read the destination address from the message block RTS_CTS On/Off = When enabled, the will respond to the RTS and CTS signals from the PLC GROUPDES On/Off = Sets the Group destination REPECONF XXX,XXX,XXX = Establishes the repeater configuration f the. A_BADD ON/OFF = Sets the decimal address of the PLC that are connected to the (Conversion Mode Only) A_BPOLET XXX = Sets the rate of inquiry message when in Conversion Mode. A_BCTRL XXXX_XXX = Enables DF1 emulation in the following conditions 1747-KE, (Pt 0), Basic TXD 3 RXD 2 RTS 7 CTS 8 SIG GND 5 DCD 1 9-Pin Female 5 CTS To 1747-KE, Series Basic ( Part Number AA061 (6 foot) ) Figure 14: Interface Cable DF1 9-Pin Engineering Rept Page 6 Revised: 21 Jul 99

7 Engineering Rept 1785-KE TXD 2 RXD 3 RTS 4 CTS 5 DSR 6 DCD CTS 6 DSR SIG GND 15-Pin Male To 1785-KE ( Custom Cable) Figure 15: Interface Cable 1785-KE Personal Computer TXD 3 RXD 2 RTS 7 CTS 8 SIG GND 5 DCD 1 9-Pin Female 5 CTS /PC Interfacing To 9 Pin DB ( Part Number AA061 (6 foot) ) Figure 18: Interface Cable PC 9-Pin PLC 5/11, 20, 30, 40, 60 and 80 TXD 2 RXD 3 RTS 4 CTS 5 5 CTS 6 DSR 6 DSR SIG GND 7 DCD 8 RTU-1000 TXD 2 RXD 3 RTS 19 SIG GND 7 RTS IN 4 To PLC-5 Series Processs ( Part Number AA06 (6 foot) ) Figure 16: Interface Cable PLC-5 Pt 0 To RTU-1000 ( Custom Cable) Figure 19: Interface Cable RTU-1000 KF2, KF3 Personal Computer TXD 2 RXD 3 RTS 4 CTS 5 25-Pin Female 5 CTS 6 DSR 6 DSR SIG GND 7 DCD 8 MicroLogic Interface Cable RXD 2 TXD 3 SIG GND 5 9-Pin Male To Personal Computer KF2/3 ( Part Number AA07 (6 foot) ) Figure 17: Interface Cable PC KF2/KF3 to MicroLogic Interface Cable (1761-CBL-PM02) ( Custom Cable) Figure 20: Interface Cable Micro Logic Engineering Rept Page 7 Revised: 21 Jul 99

8 Engineering Rept Personal Computer Using 6200 Software Add 20 OR Add 30 Add 30 Add 20 Add 20 Add 30 Add 30 ADD 20 SETC 30 Set Address to Octal 20 ADD 30 SETC 20 Set Address to Octal 30 Figure 21:Typical Point to Point Program PLC 2 with 1771 KGM PLC 2 with 1771 KGM Add 11 Add 11 PLC 2 with 1771 KGM Add 12 Add 12 ADD 10 A_BCTRL HALF_BCC:SA A_BCTRL HALF_CRC:SA Set Address to Octal 20 SETC 10 A_BCTRL HALF_BCC:SA A_BCTRL HALF_CRC:SA Address Figure 22: Typical Half-Duplex Program Engineering Rept Page 8 Revised: 21 Jul 99

9 Engineering Rept PLC 2 with 1771 KGM PLC 5 With 1785-KE Add 11 Add 11 PLC 2 with 1771 KGM Add 12 Add 12 ADD 10 A_BCTRL CONV_BCC:SA A_BCTRL CONV_CRC:SA Set Address to Octal 20 SETC 10 A_BADD ON (Enter 11 12) A_BCTRL HALF_CONV:SA A_BCTRL HALF_CONV:SA Address Address of PLCs attached to Figure 23:Typical Half to Full-Duplex Program PC Running MMI Software PLC 5 (Pt KE) OR Add 0 with 1747-KE Master 5/30 PLC 5/25 with 1785-KE (Running in Local Mode) ADD 0 Set Address to 0 Add 30 SETC 0 Add 30 Address SLC 5/03 (Pt 0) Remotes Figure 24: Application Using MMI Software PLC to Poll Remote Stations Engineering Rept Page 9 Revised: 21 Jul 99

10 Engineering Rept PLC 5 with 1785-KE Running in Remote Mode Add 12 PLC 5 Address 12 Add 5 PLC 5 Address 13 Add 13 Personal Computer with KT Interface Card Using 6200 Software Add 14 PLC 5 Address 14 ADD 5 Set Address to Octal 5 SETC 5 Address Figure 25: Typical Master/Remote Station Application with the Ability to Program All Controllers Remotes Master Add 10 Add 10 with 1747-KE Add 0 SLC 5/03 (Pt 0) SLC 5/03 (Pt 0) MicroLogic Series C (Pt 0) Add 30 Add 30 ADD 0 Set Address to 0 Select DF1 Protocol with SETC 0 Address Select DF1 Protocol with Figure 26: Typical Application of SLC and MicroLogic Products Engineering Rept Page 10 Revised: 21 Jul 99

11 Engineering Rept Master PLC 5/25 with 1785-KE (Running in Local Mode) Add 5 Add 5 Add 12 Add 16 KF3 KF3 KF3 Add 12 Add 16 DH-485 DH-485 DH-485 Add 13 Add 17 Add 21 Add 14 Add 22 Remotes Add 23 ADD 5 Group ON PEPEC 12,4,3 Set Address to Octal 5 Group Destination ON Define Group Address Table SETC 5 Address Master Address Figure 27: Typical Application Of A Master PLC to Multiple Daisy-Chained s Engineering Rept Page 11 Revised: 21 Jul 99