Hart Diagnostic Details; Table 28 - Hart Critical And Non-Critical Diagnostic Details - Honeywell ST 800 Series User Manual

9.2 HART Diagnostic Details

Table 28 lists and describes the HART critical and non-critical HART diagnostic details.
Table 28 – HART Critical and Non-Critical Diagnostic Details
Status Type
Critical Status
(Failure)
(continued)
Non critical status
(Warning)
(continued)
Page 88
Device Status
(HART Command
48)
Meter Body Critical
Failure
Meter Body NVM
Corrupt
Electronic Module
DAC Failure
Config Data Corrupt
Electronic Module
Diag Failure
Sensor Comm
Timeout
No DAC
Compensation
No Factory
Calibration
ST 800 Series HART/DE Option User's Manual
Details/Resolutions
Possible causes:
•
Critical failure reported at the Sensor level
•
Meter Body NVM Corrupt
Resolution:
Reset the device. If the problem persists, replace the
Meter Body.
Possible causes:
•
Critical failure reported for the Electronics
Module
•
Database Corruption
•
Communication section has failed
Resolution:
Reset the device. If the problem persists, replace the
Electronics Module.
Possible causes:
•
No response from the Sensor
Resolution:
Try replacing the Electronics module. If this does not
fix the problem, replace the Meter Body.
Possible causes:
No temperature compensation data exists for analog
output calculations.
Loop accuracy may be slightly compromised.
The effect will be a minor degradation of ambient
temperature influence specifications.
Resolution:
Replace Electronics Module (PWA) to achieve the
maximum current loop accuracy or return the device
to factory for DAC compensation.
Possible causes:
Factory Calibration is missing. Accuracy will be
compromised.
Resolution:
Replace the Meter Body or return the device for
Factory Calibration.
Revision 5.0