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STT700 Series HART/DE Option User’s Manual
Revision 1
9 Troubleshooting and Maintenance
Troubleshooting and maintenance is supported by specific diagnostic information available from the
transmitter. Detailed diagnostic messages are available for the STT700 with HART or DE protocol
versions.
9.1 HART Diagnostic Messages
Table 21
critical and non-critical (warning) HART diagnostic messages.
Table 21
– HART Diagnostic Messages
Critical
Diagnostics
Description
More Details ( Cause and Resolution )
Elec. Mod. Diag
Failure
Diagnostics failure
(like ROM/RAM
corrupt etc)
Action: Reset the device. If the problem persists replace the
Electronics module Note: Select ‘Device Status - Additional
Status' to see which of these conditions are set.
Elec. Mod. DAC
Failure
Failure related to DAC
which regulates 4-
20mA loop
Action: Reset the device. If problem persist, replace the
Electronics Module.
Note: Select ‘Device Status - Additional Status' to see which
of these conditions are set.
Sensor Input
Failure
Input sensor may
be open/short/out of
range
"Failure in sensing section. Any of the following conditions
can cause this failure:
1. Input 1 Fault
2. Input 2 Fault.
Check the sensor Input connections.
3. Suspect Input.
Check sensor and connections. If the connections are ok,
and problem persists, replace the Electronics Module board
Note: Select 'Device Status - Additional Status' to see which
of these conditions are set
Char/Cal Data
Corrupt
Factory Calibration
data is corrupted
Characterization / Calibration data is corrupted or missing.
Replace Device if error persists upon power cycle
Config Data corrupt
NVM data corrupted
Action: Power cycle the device. If the problem persists,
replace the Electronics Module.