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What could cause my Quantum 140CPU67160 to come up as 'NO CONFIG' after a power cycle?

One possible cause is that the PLC is using a PCMCIA card in slot 1 that has a bad battery. A bad battery is indicated by PCM1 with the number flashing on the LCD display. In PLC logic, %S67 (PCMCIABAT0) can be monitored.

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