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Diagnostics and Troubleshooting
Fault Detection and Troubleclearing
88 UMC800 Controller Installation and User Guide Release F
4/01
I/O Module
Diagnostics
(In The User Utility and
Operator Interface)
Controller
LED on CPU
Fault Detection / Troubleclearing
Menu
Item
Status Possible Cause Controller Action User Action
MODULE
1 through
MODULE
16
BAD MODULE POWER
LED flashes
11 times.
Analog input or
analog output
board does not
have factory
coefficients, or the
I/O board is not a
supported type.
1. If the error is an
analog input
board with no
factory
coefficients,
default
coefficients will
be used for the
cold-junction
calculations.
2. If the error is an
analog output
board with no
factory
coefficients,
default
coefficients will
be used for the
outputs.
3. If the board is an
unsupported
type, these block
types do the
following:
AI – sets its
output to failsafe
DI – sets its
output to OFF
Replace module.