Rockwell Automation 1756-XXXX ControlLogix Digital I/O Modules - Manual (Page 178)

178 Rockwell Automation Publication 1756-UM058G-EN-P - November 2012
Appendix A Troubleshoot Your Module
Figure 21 - Input Module Status Indicators by Catalog Number
Status Indicators
for Output Modules ControlLogix output modules support the status indicators described in
Table 32 below. The available status indicators vary by module catalog number, as
shown in Figure 22 on page 179 .
AC INPUT
1756-IA8D, 1756-IA16
AC INPUT
1756-IB16, 1756-IB16I,
1756-IC16, 1756-IG16,
1756-IH16I, 1756-IV16
DC INPUT
ST 0 1 2 3 4 5 6 7
FLT 0 1 2 3 4 5 6 7
DIAGNOSTIC
O
K OK Status
Indicator
I/O Status
Indicator
Fault
Status Indicator
O
K
20945
ST 0 1 2 3 4 5 6 7
FLT 0 1 2 3 4 5 6 7
ST 8 9 10 11 12 13 14 15
FLT 8 9 10 11 12 13 14 15
DIAGNOSTIC
O
K
DC INPUT
1756-IB16D
DC INPUT
1756-IA32, 1756-IV32
ST 0 1 2 3 4 5 6 7
ST 8 9
1 1 1 1 1 1
0 1 2 3 4 5
ST 1 1 1 1 2 2 2 2
ST 6 7 8 9 0 1 2 3
ST 2 2 2 2 2 2 3 3
ST 4 5 6 7 8 9 0 1
O
K
AC INPUT
1756-IA8D, 1756-IA16I,
1756-IM16I, 1756-IN16
O
K
1756-IB16IF
DC INPUT
PEER DEVICE
O
K 0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
ST
ST
0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
ST
ST
0 1 2 3 4 5 6 7
8 9 10 11 12 13 14 15
ST
ST
Table 32 - Status Indicators for Output Modules
Indicator Status Description
OK Status Steady green The outputs are actively being controlled by a system processor.
Flashing green The module has passed internal diagnostics but is not actively controlled
or it is inhibited or controller is in Program mode.
Uninhibit connection, establish connection or transition controller to
Run mode to enable communication to module.
Steady red The module must be replaced.
Flashing red Previously established communication has timed out.
Check the controller and chassis communication.
I/O Status Yellow The output is On.
Fuse Status Red A short overload fault has occurred for a point in this group.
Check the wiring for a short-overload. Also check the Module Properties
dialog box in RSLogix 5000 software and reset the fuse.
Fault Status Red The output has encountered a fault.
Check the output point at the controller.
Diagnostic Status Steady red The output has encountered a fault.
Check the output point at the controller.
Flashing red The output is listening for peer inputs and using the inputs to determine
the state of the output point.