We are using an HMS AB7954 to connect a Siemens S7-315 PLC system to Mitsubishi PLC however we are seeing intermittant communication faults between the Siemens PLC and the Anybus gateway. The problem is that about once every 3 minutes we get a brief communications fault that shows up in the Siemens PLC diagnostic buffer as an I/O access error writing to the access addresses assigned to the anybus device. We are using GSDML-V2.3-HMS-ANYBUS_X_GATEWAY_PROFINET_IO-20161110.xml to configure the Profibus device.
The problem exists on the customer system which is in another country that I cannot travel to at the moment due to COVID travel restrictions, due to security concerns I also cannot connect to the system directly so I am troubleshooting through the customer. I have a duplicate system set up in my factory that does not exhibit the problem (however I also do not have the Mitsubishi side connected to anything).
I’m not really sure where to start troubleshooting this problem, any advice would be greatly appreciated. Is it possible the device is faulty?
Some pictures follow: