Page 100 Foundation Fieldbus RMA803 Remote Indicator User's Guide Revision 4
8.3 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 PID
function block is in OOS mode, the block does not provide updated output values, although the PID
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
Table 26: Resource block
Problem cause Things to check Recommended action
Resource block
mode is OOS mode
and is not going 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.
Resource block is
not running.
Check BLOCK_ERR for
errors.
See Table 12 for details on
BLOCK_ERR.
Incorrect revision
level of the device
firmware.
Read REVISION_ARRAY
See section 8.2
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.
Field diagnostics
alarms are not
reporting.
Check Field Diagnostics
MASK.
If the alarms are MASKED, then
the alarms do not report. Unmask
the alarms.
Check Field Diagnostics
Priority.
If the priority is zero alarms do not
report. For information on how set
the priority, see Table 13.
Check Field Diagnostics
MAP.
If alarms are not mapped, then
Map alarms to any of the Field
Diagnostics alarm parameters.
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