I have a S7-200 with several LEDs flashing all in time and in a symmetrical pattern with proximately 1 sec interval.
LEDs flashing include:
SF
RUN
STOP
and several of the I/O lights.
The power supply is supplied with 120VAC and is supplying 24VDC to the PLC.
LEDs flashing include:
SF
RUN
STOP
and several of the I/O lights.
The power supply is supplied with 120VAC and is supplying 24VDC to the PLC.