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Some PLC suppliers ground the reference voltage in their cabinets, but the other don't. Is there any special reason for that. What do we get by grounding the reference voltage and what do we lose? For a particular project, how can we
conclude that the reference voltage should be grounded or not? Is it related to the process conditions or number of I/O signals or some other things like that?
conclude that the reference voltage should be grounded or not? Is it related to the process conditions or number of I/O signals or some other things like that?