Siemens SIMATIC BATCH Operating Manual page 448

BATCH Control Center
9.8 Batch control
SFC plan and BATCH interface block
BATCH blocks (IEPH, IEOP) receive the status of SFC plan. The behavior of batches after a
CPU restart is determined according to the settings made for the SFC plan. A difference is
made between the settings "Initialise SFC" and "Maintain SFC state".
Initialize SFC: After a CPU restart, the SFC is initialised, i.e. the operating state is "Ready"
(IDLE) and all chains are initialised. The operating mode remains unchanged - AUTO or
MANUAL. The BATCH blocks also have the status "Ready" (IDLE). Batches are in error and
the status "BA_State" or Bit 31 is set. Further operation is as described in chapter "batch
operation after CPU restart when using SFC types".
Maintain SFC state: After a CPU restart, the SFC is visualized in its actual state. The step that
was active before the CPU stop is marked. The SFC waits for manual operation by the user.
You do not have to switch over from AUTO to MANUAL. The step to be continued can be
selected. The continue, cancel or stop functions are possible.
The BATCH blocks assume the status as in the SFC plan. The "Running" status is displayed
in the following figures.
Image 9-23
448
Run chain, SFC visualization on the OS
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA