Honeywell ST700 - Troubleshooting the LCD Transducer Block; Table 23: LCD Transducer Block

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Troubleshooting the LCD Transducer block
Table 23: LCD Transducer block
Problem Cause Things to check Recommended Action
LCD Transducer block
mode is in OOS and does
not change to AUTO
mode.
Read
MODE_BLOCK.PERMITTED
Add AUTO mode to
MODE_BLOCK.PERMITTED.
Read MODE_BLOCK. ACTUAL
of Resource block.
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.
Writing to display
parameters fails.
Check for local display.
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.
Local display shows
Attention as title with some
text.
Check the DISPLAY_MESSAGE
parameters.
Transmitter messaging is activated; to
clear the message executed the Clear
Message method. For more
information see section 3.6
Block alarms are not
reported.
Read FEATURE_SEL. Reports are not selected in
FEATURE_SEL. If features do not
include Reports then the host must
poll for alarms.
Read LIM_NOTIFY Set LIM_NOTIFY to a value higher
than zero, but not higher than
MAX_NOTIFY.