Samson 4785, Mounting And Operating Instructions

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Auto mode
If the status of the reference variable (SP) is bad, the action determined via FSAFE_TYPE is
executed after the fail-safe time (FSAFE_TIME) has elapsed.
RCAS mode
In RCAS mode, the positioner switches to automatic mode after the fail-safe time
(FSAFE_TIME) has elapsed, unless the status of the reference variable RCAS_IN is "good-cas-
cade".
Once the positioner has switched to automatic mode, the rules stated under "Auto mode"
apply, i.e. fail-safe action is activated depending on the reference variable (SP). The posi-
tioner switches to automatic mode before the fail-safe time has elapsed if the status of the ref-
erence variable RCAS_IN is "good_cas_initiate_fail_fsave".
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EB 8382-2 EN
How to implement the PROFIBUS Master Class 1