1/16/2020 8:30 AM | |
Joined: 9/2/2013 Last visit: 12/2/2024 Posts: 128 Rating: (0) |
Hi, We have 2 flow computers (A&B) communicating thru modbus PN in our Redundant PLC 412-5h PN/DP. PLC as the clients and the other two flow computers are the slave. Everything was working fine but during our plant shutdown (power loss on the CPU). Flow computer A communication is working fine but I lost the communication from one of my flow computer B and its giving me a error code of "A083". and the busy bit is always "on". The error code popping up mostly every second. I've checked the error code but still don't understand how to clear this alarm and make my communication work again. It seems that there is a bit I need ti reset but I don't know what it is. I have uploaded the FC and Hope you can assist me on this problem. Regards, J Attachmentsc1.pdf (424 Downloads) |
1/16/2020 9:19 AM | |
Joined: 4/28/2015 Last visit: 12/9/2024 Posts: 10661 Rating: (829) |
Hello, and how looks Online VAT table with similar but working signals? |
With best regards... |
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1/16/2020 9:46 AM | |
Joined: 9/2/2013 Last visit: 12/2/2024 Posts: 128 Rating: (0) |
Hi Wüstenräuber, Thank you for your response. I will try it and if it does not works I will attached the IDB. Regards, |
1/16/2020 10:14 AM | |
Joined: 9/2/2013 Last visit: 12/2/2024 Posts: 128 Rating: (0) |
Hi, I tried deleting the timer. The error code was gone and I don't see any error but the communication still doesn't work. The busy bit is always high and I see ENQ and Error flash a bit from time to time. Please find attached IDB and the VAT screenshot I see online. Hope you can help me find a way about this problem. Regards, AttachmentIDB&VAT.pdf (432 Downloads) |
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