Troubleshooting The Diagnostics Transducer Block; Table 21: Diagnostics Transducer Block - Honeywell ST700 User Manual

Troubleshooting the Diagnostics Transducer block

Problem cause
Diagnostic Transducer
block mode is in OOS
and does not change
to AUTO mode.
Sensor Diagnostics,
Sensor voltage
diagnostics, Electronic
temperature
diagnostics values are
not updating.
Block alarms are not
reported.
Revision 2.0 FOUNDATION Fieldbus ST 700 Pressure Transmitter User's Guide

Table 21: Diagnostics Transducer block

Things to check
Read
MODE_BLOCK.PERMITTED
Read MODE_BLOCK.
ACTUAL of Resource block.
Read
TRACK_UPLOAD_DATA
Read FEATURE_SEL
Read LIM_NOTIFY
Recommended action
Add AUTO mode to
MODE_BLOCK.PERMITTED.
If necessary, Set MODE_BLOCK.TARGET
to AUTO.
NOTE:
If the mode is set to OOS for maintenance
then do not change the mode to AUTO.
Select value other than NONE, and then
wait for 10 seconds.
If no values are updated (for example, if Max
and Min still shows 999) in Sensor
Diagnostics and Sensor voltage diagnostics,
Contact Honeywell TAC.
Reports are not selected in
FEATURE_SEL. If features do not include
reports then the host must poll for alarms.
Set LIM_NOTIFY to a value higher than
zero, but not higher than MAX_NOTIFY.
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