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IB IL 24 MUX MA-PAC
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PHOENIX CONTACT 5981_en_06
8.4.2 Localizing errors on a field multiplexer station
Diagnostic and status indicators on a field multiplexer station show the location of errors
clearly. An error is displayed on the station using LEDs.
Figure 8-1 Example station for error localization
Terminals used in the example station:
1 IB IL 24 MUX MA-PAC
2 IB IL 24 DI 4-PAC
3 IB IL 24 DI 2-PAC
4 IB IL 24 DO 2-2A-PAC
5 IB IL 24 AI 2-PAC
When the system is operating correctly, the green LEDs on the field multiplexer and the
other terminals remain lit (Figure 8-2, A). All the red LEDs are off.
5 9 8 1 A 0 0 5
1 2
1
2
3
4
1
2
3
4
1 2
1
2
3
4
1
2
3
4
1 2
1
2
3
4
1
2
3
4
1 2
1
2
3
4
1
2
3
4
S T
C E
U L
R E
L E
U S
U M
M U X
1 2
1
2
3
4
1
2
3
4
1
2
D
D O 2
1 2
1
2
3
4
1
2
3
4
1
2
D
D I 2
1 2 3 4 5
1 2
1
2
3
4
1
2
3
4
D
A I 2
1 2
1
2
3
4
1
2
3
4
5
6
5
6
1
2
3
4
D
D I 4