I work for a small manufacturing firm and we are redesigning the control electronics to include a PLC, HMI and VFD. The question has come up as how to designate the wires. One school of thought is to give each wire a discreet number. The other school is to number the nodes. Scheme 1 would have each of the wires for example from the power supply positive to the HMI, PLC , Estop relay, etc would have a different number. In scheme 2 the power supply positive wire to each device would have the same number. Is there a better way to do this? What if any is the standard of the industry? Where can I learn about this stuff?
Jmoffat
Jmoffat