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1 indicators and controls, Im312, Im300-5 – Siemens S5-135U/155U User Manual

Page 294: I/o module, Im300-3 failure i/o module failure, Interface modules

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7-4

System Manual

C79000-G8576-C199-06

7.1.1

Indicators and Controls

IM 300-3:
I/O Module Failure LED
This LED lights up if the supply of power to the connected EUs has failed
and/or the connecting cable is open-circuit.

IM 300-5 (-5CA11):
I/O Module Failure LEDs
LEDs LD1 and/or LD2 light up if a module inserted in the EU no longer
responds to an access by the CPU.

The IM 312 has no indicators or controls.

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34

18

33 17

1

IM312

Fault

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34

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33 17

1

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34

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1

IM300-5

Fault

I/O Module

Fault

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33 17

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IM300-3

Failure

I/O Module
Failure

Figure 7-1

Front Plates of the IM 300 and IM 312

Interface Modules