Agilent Technologies DP111 Spécifications Page 210

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FOUNDATION Fieldbus H1 – CI852 Section 5 Maintenance
210 3BSE036351-510 A
FOUNDATION Fieldbus H1 – CI852
Table 32. FOUNDATION Fieldbus H1 CI852 – Fault-Finding
Fault Possible Cause and Corrective Action
R(un) and F(ault)
LEDs are not ON
The CI852 board is in the process of being restarted or
configured. Allow time for this to finalize.
If the condition persists, and all units on the CEX-Bus have
non-illuminated LEDs:
Check that a valid HW configuration including the CI852 is
downloaded to the controller.
Check the CEX-Bus fuse inside the PM8xx processor unit.
Initiate a reset signal (INIT) from the PM8xx processor
unit.
Replace the CI852 unit.
F(ault) LED is ON Use the Control Builder software to demand status information
from the CI852 unit and proceed accordingly:
Initiate a reset signal (INIT) from the PM8xx processor
unit.
Replace the CI852 unit.
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