Troubleshooting The Lcd Transducer Block; Table 23: Lcd Transducer Block - Honeywell ST700 User Manual

Troubleshooting the LCD Transducer block

Problem Cause
LCD Transducer block
mode is in OOS and does
not change to AUTO
mode.
Writing to display
parameters fails.
Local display shows
Attention as title with some
text.
Block alarms are not
reported.
Revision 2.0 FOUNDATION Fieldbus ST 700 Pressure Transmitter User's Guide

Table 23: LCD Transducer block

Things to check
Read
MODE_BLOCK.PERMITTED
Read MODE_BLOCK. ACTUAL
of Resource block.
Check for local display.
Check the DISPLAY_MESSAGE
parameters.
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.
Basic Display is required for LCD_TB
to work.
If display is available, remove and
reconnect the local display, and check
if display powers up.
If display is not powering up contact
Honeywell TAC.
Transmitter messaging is activated; to
clear the message executed the Clear
Message method. For more
information see section 3.6
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.
Page 101