Siemens Simatic S7-1500H, System Manual

Page: 224 / 327

Commissioning
9.4 Operating and system states
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
223
⑧
RUN- Redundant → STOP, RUN - Solo → STOP, RUN → STO P
Transition Description Effects
System state
transition
RUN- Redundant → STOP, RUN - Solo → STOP
The redundant system switches from the RUN-Redundant/RUN-Solo system
state to the STOP system state if:
•
The redundant system detects an error that prevents further processing
or
• The redundant system processes a STOP command in the user program
or
•
You set the redundant system to STOP with the PG/PC.
This system state tran-
sition does not have
any effect on data.
Operating state
transitions
RUN- Redundant → STOP , RUN → STOP
The primary CPU switches from the RUN-Redundant/RUN operating state to
the STOP operating state if:
•
The CPU detects an error that prevents further work on one of the two
CPUs.
or
• The CPU detects an error that prevents further work on both CPUs, for
example if the cycle time is exceeded (if there is an OB 80, not until the
3rd time the cycle time is exceeded, see section Start events (Page 153))
or
•
You set the CPU to STOP with the PG/PC, the display or the mode selec-
tor.
These operating state
transitions have no
effect on data.
RUN-Redundant → STOP
The backup CPU switches from the RUN-Redundant operating state to the
STOP operating state.
⑨
SYNCUP → RUN -Solo, RUN- Syncup → RUN
Transition Description Effects
System state
transition
SYNCUP → RUN -Solo
The redundant system switches from the SYNCUP system state to the RUN-
Solo system state if:
•
You execute POWER OFF for the backup CPU
or
•
The redundant system detects an error during SYNCUP that prevents
redundant operation
or
•
You set the backup CPU to STOP with the PG/PC, the display or the
mode selector.
This system state tran-
sition does not have
any effect on data.
Primary CPU
operating state
transition
RUN-Syncup → RUN
The primary CPU switches from the RUN-Syncup operating state to the RUN
operating state and continues to execute the user program.
These operating state
transitions have no
effect on data.