User`s guide

On-line Monitoring and Diagnostics
I/O Module Diagnostics
218 UMC800 Control Builder User’s Guide Release E
1/01
Details of I/O module diagnostics
Table 53 lists the status indications, possible cause, and actions to correct the problem.
Table 53 Details of I/O module diagnostic summary
Class Status Possible Cause Controller Action User Action
MODULE
1 through
MODULE
16
GOOD Module matches the
configuration OR the
module is not present
in the control
configuration.
N/A N/A
HI CJ
TEMPERATURE
High cold junction
temperature on AI
module.
Executes normally.
1. Improve ventilation
to rack.
2. Replace AI
module.
WRONG
MODULE
The module does not
agree with the module
required for the
control configuration.
These block types do the
following:
AI - sets its output to
failsafe
DI - sets its output to OFF
Replace module or
check configuration.
NO MODULE No module found in
the slot that requires a
module for the control
configuration.
These block types do the
following:
AI - sets its output to
failsafe
DI - sets its output to OFF
Install the module.
BAD MODULE Analog input or
analog output board
does not have factory
coefficients, or the I/O
board is not a
supported type.
If the error is an analog
input board with no factory
coefficients, default
coefficients will be used for
the cold-junction
calculations.
If the error is an analog
output board with no factory
coefficients, default
coefficients will be used for
the outputs.
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.