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C200H-PR027-E and CQM1H PLC Connection

FAQ No. FAQ00259

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Question

I have connected a C200H-PRO27-E Programming Console to a CQM1H Programmable Controllers peripheral port and am running the CPU Unit in MONITOR mode. However, when I turn OFF power supplies to CPU Units, remove Programming Console, and then turn ON power supplies again, CPU Units do not enter RUN Mode. What is the cause of this, and how can I resolve this problem?

Answer

If you turn OFF power supplies to CPU Units while the pin 7 on the DIP switch on the front of CPU Units are OFF, CPU Units will enter PROGRAM Mode when power supplies are turned ON again.
Therefore, be sure to turn OFF the power to the CPU Unit with pin 7 on the DIP switch turned ON. Alternatively, you can set the operating mode in Programmable Controllers Setup to enter RUN Mode (set DM6600 to 0202) when power supplies are turned ON.