Redundancy via SCA-RS
SICAM RTUs, SICAM AK Redundancy
Unrestricted
37
DC2-026-2.07, Edition 10.2016
Settings for PREs (CPU Redundancy)
Column name/
Parameter
Description/Value
Comment
DR#
Not editable
DB
Not editable
CPU-pair
Predefined CPU-pairs for the redundancy
Not editable
PRE
In each case four PREs (0 – 3) per CPU-pair
Not editable
Priority PRE failure
Definition of the priority level for the failure of
the PRE concerned (hardware or firmware
damage)
To be defined for all four
PREs (0–3).
Available for: CPU
redundancy and line-by-line
redundancy switchover with
SCA-RS
Priority
communication
failure
Definition of the priority level for the failure of
the communication on the PRE concerned
To be defined for all four
PREs (0–3).
Priority
communication fault
Definition of the priority level for
communication fault on the PRE concerned
To be defined for all four
PREs (0–3).
Priority assignment
See following section
Specific setting for AU-
redundancy (line-by-line
redundancy switchover
with SCA-RS)
Can be defined for all PREs
for every BSE of the AU (M-
CPU and 16 C-CPUs).
Option: switchable
Defines, whether the Voter (the M:CPU)
should switch over the PRE of the redundancy
pair concerned (s
ystem element is being
switched passive
) or not (s
ystem element is
not being switched passive
)
The option entered defines
the action of the voter; not
available for line-by-line
redundancy switchover with
application-related voting
Option: prefered
position
See following section
Specific setting for line-by-
line redundancy
switchover with
application-related voting
Can be defined for all PREs
for every BSE of the AU (M-
CPU and 16 C-CPUs).
Option: general
interrogation
Defines, whether a GI is to be sent after the
switchover of the relevant PRE to active (
GI
after active
) or not (
no GI after active
)
