The start-up behavior after a CPU restart is determined by the two system settings at the SFC
instance:
● Initialise SFC
● Maintain SFC state
Image 9-20 Initialise SFC selected as setting
Properties of the SFC startup after a CPU restart: "Initialise SFC"
Scenario: There has been a CPU stop and the start-up behavior of the SFC is set to "Initialise
SFC". The SFC stops at the currently active step
Result: After a CPU restart, the SFC is initialised, i.e. the operating state is "Ready" (IDLE)
and all steps are initialised. The operating mode remains unchanged - AUTO or MANUAL.
In the "Ready" mode, only a start command can be issued; in the MANUAL mode, the "Start"
command or in the AUTO mode the start command from BATCH.
Operating SFC visualisation in the OS: A switch-over from AUTO mode to MANUAL mode is
required for manual operation. Only the "Start" function is possible. The SFC is once more run.
BATCH Control Center
9.8 Batch control
SIMATIC BATCH V8.2
444 Operating Manual, 02/2016, A5E35958174-AA
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