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What This Appendix
Contains
Using the Status Indicators
Table 11 - 1756-CFM Module Status Indicators
LED Indicators
This Display
OK
Steady green light
OK
Flashing green light
OK
Flashing red light
OK
Steady red light
Input
Off
(F, Z)
Input
Steady yellow
(F, Z)
Output
Off
(0, 1)
Output
Steady yellow
(0, 1)
Troubleshooting the Configurable
Flowmeter Module
This appendix describes how to troubleshoot the module.
The module offers status indicators to show the health of your module. The
indicators show individual I/O status (green) for each point and a bi-colored
indicator for module "OK" (red/green).
Series A Module
METERING
F
Z
F
Z1
0
0
1
O
O
O
K
0
1
DC I/O
During powerup, an indicator test is done and the following occurs:
•
The "OK" indicator turns red for one second.
•
If the module passes the self-test, the "OK" indicator turns to flashing
green.
Means
The inputs are being multicast and in normal operating
state.
The module has passed internal diagnostics but is not
actively controlled.
Previously established communication has timed out.
The module must be replaced.
The input is turned off.
The input is not in use.
A wire is disconnected.
The input is in normal operating state.
The output is turned off.
The output is not in use.
The output is in normal operating state.
Rockwell Automation Publication 1756-UM010C-EN-P - June 2021
Series B and Later Modules
1756-CFM
F
Z
F
Z1
0
0
1
O
O
O
K
0
1
DC I/O
Take This Action
None
Configure the module.
Check controller and chassis communication
Replace the module.
If you need to use the input, check wiring connections
None
If you need to use the output, check wiring connections
and your ladder logic application.
None
A
Appendix
103
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