Archie
Member
I have been asked to figure out why 2 HMI's will not work at the same time that are connected to a GE 90-30 rack with a 352 CPU. The HMI's are Eaton using the Canvas software with KepServer for communication. The communication is an RS232 link going into a 2 channel COMM COPROC module.
I have been told that each HMI will work alone, but if both are connected they will not work. My first thought was an address conflict. I quickly looked through the OPC settings but did not see any setting for an address. After I left there and did some research, it seems there are multiple protocol options that can be used and I did not get which one was being used.
Does anyone have any idea what could cause this not to work? I am scheduled to return to the plant on Wednesday to look at the machine again.
I have been told that each HMI will work alone, but if both are connected they will not work. My first thought was an address conflict. I quickly looked through the OPC settings but did not see any setting for an address. After I left there and did some research, it seems there are multiple protocol options that can be used and I did not get which one was being used.
Does anyone have any idea what could cause this not to work? I am scheduled to return to the plant on Wednesday to look at the machine again.