Troubleshooting Blocks; Non-Functioning Blocks; Troubleshooting Block Configuration Errors; Troubleshooting The Resource Block - Honeywell SLG 700 Option Manual

7.3

Troubleshooting blocks

Non-functioning blocks

Device block objects may not be running (executing their function block schedules) or the blocks
may be in Out of Service (OOS) mode due to block configuration error. For example, if the AI
function block is in OOS mode, the block does not provide updated output values, although the
AI block may be running. While troubleshooting a non-functioning block objects, it is
recommended to start with the resource block. For example, if the resource block is in OOS
mode, all other blocks in the device are also in the OOS mode.

Troubleshooting block configuration errors

The block configuration errors prevent a device block from leaving the OOS mode. The
BLOCK_ERR parameter (bit 1) shows whether a block configuration error is present. The
following section explains the troubleshooting for all the function blocks.

Troubleshooting the Resource block

Problem cause
Resource block
mode is OOS mode
and is not going to
AUTO mode.
Resource block is
not running.
Incorrect revision
level of the device
firmware.
Block alarms are not
reported.
Field diagnostics
alarms are not
reporting.
Rev.5
Table 24: Resource block
Things to check
Read
MODE_BLOCK.PERMITTED
Read MODE_BLOCK.
ACTUAL of Resource block.
Check BLOCK_ERR for
errors.
Read SOFTWARE_REV
Read FEATURE_SEL
Read LIM_NOTIFY
Check Field Diagnostics
MASK.
Check Field Diagnostics
Priority.
Check Field Diagnostics
MAP.
FOUNDATION Fieldbus Option User's Manual
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.
See Table 3 for details on BLOCK_ERR.
See section 7.2
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.
If the alarms are MASKED, then the alarms
do not report. Unmask the alarms.
If the priority is zero alarms do
not report. For information on
how set the priority, see
4
Table .
If alarms are not mapped, then Map alarms
to any of the Field Diagnostics alarm
parameters.
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