Siemens S5-135U/155U appendix Status Indicators

Models: S5-135U/155U

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CPUs, Memory Cards, Memory Submodules, Interface Submodules

Status Indicators

RUN

LED

on

off

off

off

off

STOP

LED

off

on

off

slow flashing

rapid flashing

Status

The CPU is in the RUN state.

The CPU is in the STOP state. After a stop request by switch or PG function, the STOP LED is continuously lit because the transition to the STOP state was requested by the user or, in multiprocessor operation, by another CPU, and was not caused by the CPU itself.

The CPU is in the INITIAL START or program check state.

The CPU is in the STOP state. The CPU has caused a transition to the STOP state (possibly also for the other CPUs). If you set the mode switch to STOP, the flashing LED becomes continuously lit.

The CPU is in the STOP state. An overall reset has been requested. This request can be initiated by the CPU itself or by operator action.

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System Manual

C79000-G8576-C199-06

Page 216
Image 216
Siemens S5-135U/155U appendix Status Indicators