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MODBUS COMMS S7 414-4H REDUNDANT SYSTEM THIRDY PART (GE)

Created by: Filimone F at: 4/29/2019 1:39 PM (6 Replies)

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4/29/2019 1:39 PM	Rate (0)
Filimone F Posts: 4 Rating: (0)	DEAR SIR I HAVE UPGRADE AN S7 315-2DP PLC TO S7 414-4H REDUNDANT. THE OLDER PLC WAS COMMUNICATING VIA CP 443-1 TO GE PSCA MODBUS CARD. THE OLDER S7 300 MODBUS BLOCKS WON'T WORK ON S7 400 THEREFORE I HAVE USED BLOCKS FB1733/1734 FROM ANOTHER SYSTEM THAT I HAVE. THE PLC, CP ORDER NR., FIRMWARE IS THE SAME AS FOR THE NEW SYSTEM I HAVE INSTALLED. DURING THE MODBUS TESTING ONE MODBUS CHANNEL CP0 FOR THE MASTER PLC IS UPDATING THE DATA NORMALLY TO DCS (TX,RX) BLINKING GREEN BUT THE OTHER CP1 CARD ON STANDBY PLC IS NOT UPDATING, GIVING A COMMUNICATON ERROR ON GE MODBUS SYSTEM. FOR THE OTHER SYSTEM I HAVE, THE CP0 AND CP1 THEY WORK NORMALLY AND BOTH BLINKING GREEN .AND ONE OF THEM IS PERMANENTLY UPDATING DATA TO DCS. WILL THIS BE RELATED TO THE MODBUS BLOCKS LICENSING? HOWEVER, I AM BUYING TCP RED LICENSES.
Filimone F Posts: 4 Rating: (0)
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4/29/2019 1:45 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello, FB 1733/1734 of the library 2XV9 450-1MB01 have been discontinued for years, They do not support hot standby. I recommend to use the newest version of the library for your project. It is the library 6AV6676-6MB30-4AX0. This library supports hot standby. You can find the demo version for this library here: Block library for redundant Modbus/TCP communication via CP443-1 or CP343-1 These technical data apply: Which technical data applies for the SIMATIC Modbus/TCP blocks and for which CPUs and CPs is it released? Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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This contribution was helpful to 1 thankful Users Filimone F

4/29/2019 1:55 PM	Rate (0)
Filimone F Posts: 4 Rating: (0)	THANK YPU FOR THIS. I HAVE ORDERED ALREADY THIS LICENSE AND AWAITING DELIVERY. HOWEVER, I AM USING EXACTLY THE SAME BLOCKS FOR THE SAME TYPE OF CPU, FIRMWARE. IN THE OTHER SYSTEM BOTH CPs ARE WORKING NORMAL BUT IN THE ONE I AM USING ONLY 1 CP FOR THE MASTER IS ACTIVE AT A TIME. IS THERE ANY WORK AROUND TO MAKE BOTH WORKS?
Filimone F Posts: 4 Rating: (0)
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4/29/2019 2:06 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello, the expression "the second CP does not work" is no proper error description. Did you check the status of the connection in the special diagnosis of the CP? Does the S7 act as client or server? Which online firmware version do your CPs have? Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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4/29/2019 2:47 PM	Rate (0)
Filimone F Posts: 4 Rating: (0)	CP IS A SERVER Order nr./Firmware6GK7443-1EX30-0XE0/V3.0 CPU 414-4H - 6ES7 414-4HM14-0AB0/V4.5 I HAVE TO HIGHLIGHT THAT THE MODBUS IS WORKING BUT FOR THE CPU WHICH IS THE MASTER AND FOR THE STANDBY CPU NO TX/RX IS FAST BLINKING. AND WHEN I SWITCH OVER THE CPUs THE CP OF THE OTHER RACK STARTS THE TRANSMISSION AND RX/TX BLINKS TO SHOW COMMS ARE OK BUT AT THE SAME TIME THE OTHER CP SHOWS RUNNING IN DIAGNOSES BUT ITS NOT UPDATING MODBUS DATA. I USE MODSCAN TO CHECK THE DATSA ON BOTH CPs. THE CP WITH THE MASTER CPU IT SHOWS THE DATA BUT THEONE ON STANDBY CPU ITS NOT FIND ATTACHED THE DIAGNOSES Attachment Diagnose CP1 29042019.txt (129 Downloads)
Filimone F Posts: 4 Rating: (0)	Last edited by: Filimone F at: 04/29/2019 14:55:59
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4/29/2019 4:12 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello, the diagnstic buffer shows that the connection is terminated by the client. The client should keep the connection established and not terminate it after each received response. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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This contribution was helpful to 1 thankful Users Filimone F

4/29/2019 4:29 PM	Rate (0)
Filimone F Posts: 4 Rating: (0)	MANY THANKS. I WILL WORK ON THE CLIENT SIDE SO SORT THE PROBLEM
Filimone F Posts: 4 Rating: (0)
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