Commissioning
9.4 Operating and system states
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
221
⑤
RUN-
Solo → SYNCUP, RUN → RUN
-
Syncup, STOP → SYNCU
P
Transition
Description
Effects
System state
transition
RUN-
Solo → SYNCUP
The primary CPU is in the RUN operating state. The redundant system
switches from the RUN-Solo system state to the SYNCUP system state if, for
example:
•
You set the backup CPU to RUN via the PG/PC or the display and the
mode selector is set to RUN
or
•
You switch the mode selector on the backup CPU from STOP to RUN.
or
•
You POWER ON the backup CPU (mode selector to RUN)
and
•
the SYNCUP system state is not disabled by the RH_CTRL instruction.
See section SYNCUP
(Page 205)
Operating state
transitions
RUN
→ RUN
-Syncup
The primary CPU switches from the RUN operating state to the RUN-Syncup
operating state if:
•
You set the backup CPU to RUN via the PG/PC or the display and the
mode selector is set to RUN
or
•
You switch the mode selector on the backup CPU from STOP to RUN.
or
•
You POWER ON the backup CPU (mode selector to RUN).
The backup CPU gets
all static and dynamic
data from the primary
CPU.
After successful
SYNCUP, the memory
content is identical on
the two CPUs.
The updated backup
CPU catches up with
primary CPU program
execution.
You have only limited
access to online func-
tions during SYNCUP.
You can find more
information in the sec-
(Page 282).
STOP → SYNCUP
The backup CPU switches from the STOP operating state to the SYNCUP
operating state.
Содержание Simatic S7-1500H
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