Redundancy Return Information Messages - Siemens SICAM AK Manual

1.6.2

Redundancy Return Information Messages

Redundancy return information messages are user data messages with a parameter-settable
5-stage address (CASDU1, CASDU2, IOA1, IOA2, IOA3) and a fixed type identification (30 =
single point information), which, among other things, provide information e.g. about the
redundancy states of the individual system elements or the position of the key-operated switch
of the SCA-RS.
The messages can be parameterized in the OPM, Tools menu (Types overview entry,
Parameter tab: under SICAM 1703 + Ax 1703 -> System functions -> Redundancy return
information message).
The redundancy return information messages have the following parameters and can assume
the following values (in brackets):
•
(0-255)
CASDU1
•
(0-255)
CASDU2
•
(0-255)
IOA1
•
(0-255)
IOA2
•
(0-255)
IOA3
•
TI, Type identification (single point information TI=30)
•
Return_inform_function_(RED)
switchover, keyswitch of the SCA-RS: system A active, keyswitch of the SCA-RS
automatic, keyswitch of the SCA-RS: system B active, listening mode)
•
BSE_(RED), Basic system element (C0-CPU to C16-CPU, M-CPU, not used)
•
PRE_(RED), Supplementary system element (PRE0 to PRE4, BSE itself, not used)
SICAM RTUs, SICAM AK Redundancy
DC2-026-2.07, Edition 10.2016
(redundancy state, switchover runs at a global
Unrestricted
Redundancy via SCA-RS
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