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Author Topic: Communication issue  (Read 2574 times)
Henryp
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Posts: 127


« on: May 10, 2016, 04:41:37 pm »

Iím using a Modbus gateway to talk to a few multi-dropped RS485 VFDs and other devices in a motor control center. The units have device IDs of 1 to 5. It appears that when one of the devices gets turned off for maintenance it causes the other devices to stop communicating. I was able to duplicate the problem by creating two Kepware OPC devices, one with a valid device ID and the other one with an invalid device ID. When I turn on data collection for the invalid device ID, I see the valid device error out.
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