hello, I am using ignition 8.05, there is a Modbus RTU Over TCP Communication Timeout error occured frequently.
Site device protocol is modbus RTU, 10+ devices connected to Serial Device Servers, ignition communicate with these devices with Modbus RTU Over TCP driver, read ever 5 minutes. Some config as follows:
At first, all is OK, tag read good, but after some time later, tag quality turns bad, device Log Activity display message Request failed. FailureType==TIMEOUT . Then I watch TCP message with Wireshark, as I see, every query has answer from site device, some screenshots as follows:
When I reconnect the TCP scoket, the problem disapper and tag turns good.
Now I don’t konw where the problem is, I hope to find the real reason but I don’t know why ignition report the error, can anyone help me?