⑨ SYNCUP → RUN-Solo, RUN-Syncup → RUN
Transition Description Effects
System state trans
ition
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 trans
ition does not have any
effect on data.
Primary CPU oper
ating state trans
ition
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.
⑩SYNCUP → STOP, RUN-Syncup → STOP
Transition Description Effects
System state trans
ition
SYNCUP → STOP
The redundant system switches from the SYNCUP system state to the STOP sys
tem state if:
• You set the primary CPU or both CPUs to STOP with the PG/PC, the display
or the mode selector.
• SYNCUP Is aborted as a result of an error in the primary CPU or in both
CPUs.
This system state trans
ition does not have any
effect on data.
RUN-Syncup → STOP
The primary CPU switches from the RUN-Syncup operating state to the STOP
operating state if:
• The primary CPU detects an error that prevents further processing
or
• You set the primary CPU to STOP with the PG/PC, the display or the mode
selector
or
• The redundant system processes a STOP command in the user program.
Operating state
transitions
SYNCUP → STOP
The backup CPU restarts and switches to the STOP operating state after SYN
CUP aborts if:
• SYNCUP Is aborted due to an error (for causes and remedies, see section
SYNCUP system state (Page 270))
or
• You set the CPU to STOP with the PG/PC, the display or the mode selector.
These operating state
transitions have no
effect on data.
288
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Commissioning
11.4 Operating and system states
To Next Page
Loading...
