Siemens SIMATIC S7-1500 System Manual page 288

Commissioning
11.4 Operating and system states
⑨
SYNCUP → RUN-Solo, RUN-Syncup → RUN
Transition Description
System state trans­ SYNCUP → RUN-Solo
ition 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.
Primary CPU oper­ RUN-Syncup → RUN
ating state trans­ The primary CPU switches from the RUN-Syncup operating state to the RUN
ition operating state and continues to execute the user program.
⑩
SYNCUP → STOP, RUN-Syncup → STOP
Transition Description
System state trans­ SYNCUP → STOP
ition 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.
Operating state RUN-Syncup → STOP
transitions 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.
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.
288
Effects
This system state trans­
ition does not have any
effect on data.
These operating state
transitions have no
effect on data.
Effects
This system state trans­
ition does not have any
effect on data.
These operating state
transitions have no
effect on data.
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD