Troubleshooting (continued)Table 7-29:
Symptom Possible causes Corrective action
Mode sheds form ROUT to MAN 1. Remote output value 1. Host system is not writing ROUT_IN
with a quality and status of good
cascade within shed time (see 2 be-
low).
2. Shed timer 2. The mode shed timer, SHED_RCAS,
in the resource block is shed too low.
Increase the value.
Process and/or block alarms will not
work.
1. Features 1. FEATURES_SEL does not have Alerts
enabled. Enable the Alerts bit.
2. Notification 2. LIM_NOTIFY is not high enough. Set
equal to MAX_NOTIFY.
3. Status options 3. STATUS_OPS has Propagate Fault For-
ward bit set. This should be cleared to
cause an alarm to occur.
7.10 Airthmetic (ARTHM) function block
The arithmetic function block provides the ability to configure a range extension function
for a primary input and applies the nine different arithmetic types as compensation to or
augmentation of the range extended input. All operations are selected by parameter and
input connection.
Arithmetic (ARTHM) function blockFigure 7-24:
Foundation Fieldbus
172 OCX 8800
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