Table 8-27: Troubleshooting
(continued)
Symptom Possible causes Corrective action
2. Cascade input 2. CAS_IN
a. The link is not configured (the
status would show Not
connected). Configure the
CAS_IN link to the block.
b.The upstream block is sending
back a Quality of Bad or a Status of
Not Invited. See the
appropriate upstream block
diagnostics for corrective action.
Mode sheds from RCAS to AUTO. 1. Remote cascade value 1. Host system is not writing
RCAS_IN with a quality and status
of good cascade within shed
time (see 2 below).
2. Shed timer 2. The mode shed timer,
SHED_RCAS, in the resource block
is shed too low. Increase the value.
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 below).
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 Forward bit set. This should
be cleared to cause an alarm to
occur.
Mode will not leave out of service (OOS)
See Mode will not leave out of service (OOS).
Mode will not leave IMAN
Potential cause
The link is not configured; the status shows Not connected.
Recommended action
Configure the BKCAL_IN link to the downstream block.
F
OUNDATION
™
Fieldbus Manual
December 2022 00809-0500-4880
192 Emerson.com/Rosemount
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