Siemens S5-135U/155U appendix Indicators and Controls, IM 300-5 -5CA11, IM300-3 IM300-5 IM312

Interface Modules

7.1.1Indicators 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.

34 18	1	34	18	1	34 18	1
50 33	17	50 33		17	50 33	17
	I/O Module				I/O Module
	Failure				Failure
Fault			Fault
		Fault
		34	18	1
		50 33		17
IM300-3		IM300-5			IM312

Figure 7-1 Front Plates of the IM 300 and IM 312

7-4	System Manual
	C79000-G8576-C199-06