UM344-2 CALIBRATION AND MAINTENANCE
September 1995
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Repeat the "TEST" program to ensure the validity of the reported fault.
Press END (F4) to exit the CALIBRATE/TEST program. Go to step 5.
Fault Does Not Reappear:
If the fault was temporary - possibly caused by excessive electrical noise or a power line spike -
the adjacent message will be displayed:
If the transmitter passes the selftest, it will automatically exit the failsafe mode and resume
operation.
5. If a fault exists, on the MXC, press STATUS then
ERRORS (F2). Compare the displayed errors with those
noted in step 3. Refer to Table 6.1 for a list of errors and
corrective action. The MXC screen is shown here.
B. Communication Warning Messages
The following three communication warning messages can interrupt the MXC screen at any time
during a communication if an error is detected. A troubleshooting procedure with a "possible cause"
and "corrective action" recommendation is provided for each error message in Tables 6.2, 6.3 and 6.4.
TABLE 6.2 Message - No Transmitter Found
This message is the result of a failed attempt to communicate with a specific transmitter when executing
the FIND XMTR program on the MXC.
POSSIBLE CAUSE CORRECTIVE ACTION
Wrong Transmitter Address
(Digital transmitter only) or Tag Consult configuration documentation to obtain correct address or Tag.
Electrical Noise on Signal Wires Press RETRY (F3) at least 3 times, waiting at least 1 minute between retries. If
not successful, continue troubleshooting.
Check for multiple loop cable shield grounds.
TRANSMITTER PASSED
TRANSMITTER SELFTEST
CONT
E2 ROM E3 RAM
E4 EPROM E5 TIMER
E6 SENSOR
EXIT
! WARNING !
COMMUNICATION ERROR
RETRY QUIT
! WARNING !
FIELD DEVICE
MALFUNCTION
! WARNING !
NO TRANSMITTER FOUND
RE-
TRY END