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.
50
34
18
33
17
1
IM 312
Fault
50
34
18
33
17
1
50
33
17
34
18
1
IM 300-5
Fault
I/O Module
Fault
50
34
18
33
17
1
IM 300-3
Failure
I/O Module
Failure
Figure 7-1
Front Plates of the IM 300 and IM 312
The 300 and 312 Interface Modules
System Manual
7 - 6
C79000-B8576-C199-03
