Rockwell Automation 1771-IXHR , D17716.5.80 HIGH RESOL.THERMOCOUPLE - Manual (Page 44)

Chapter
8
8Ć1
Troubleshooting
We describe how to troubleshoot your module by observing LED indicators and
by monitoring status bits reported to the processor.
At power–up, the module momentarily turns on both indicators as a lamp test,
then checks for
correct RAM operation
EPROM operation
EEPROM operation
a valid write block transfer with configuration data
Thereafter, the module lights the green RUN indicator when operating without
fault, or lights the red FAULT indicator when it detects fault conditions. If the
red FAULT indicator is on, block transfers will be inhibited.
The module also reports status and specific faults (if they occur) in every
transfer of data to the PC processor. Monitor the green and red LED indicators
and status bits in word 1 of the BTR file when troubleshooting your module.
Figure 8.1
LED Indicators
RUN
FLT
TC/MV
Module
10528-I
Green RUN Indicator
Red Fault (FLT) Indicator
Chapter Objective
Diagnostics Reported by the
Module