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F (fault) “on” at power up and “off” after self-test ok
R (run) “off”
P (pow ok) “on” if power supply ok
T1 “off”
T2 “off”
PR “on” (only primary FCI in a redundant configuration)
DU “off” (both FCI in a redundant configuration)
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F (fault) “on” at power up and “off” after the first access from
the FCI
R (run) “off” at power up and “on” for AI, DI after
configuration from the FCI. AO and DO
remains in “off”
W (warning) “off” at power up and after module operational
updated from the module
O (osp only outputs) “off”
With configuration and communications with the controller:
See timing diagram Figure 2-4.
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F (fault) “on” at power up and “off” after self-test ok
R (run) “off” at power up and “on” after configuration and
commanded operational from the controller.
(can take about 1 to 4 minutes)
P (pow ok) “on” if power supply ok
T1 “on” if cable 1 ok
T2 “on” if cable 2 ok
The backup will be started up after the I/O. When the backup has started
PR “on” (only primary FCI in a redundant configuration)
DU “on” (both FCI in a redundant configuration)
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