Siemens SIMATIC PCS 7 Function Manual page 14

BATCH interface blocks
2.1 IEPH
Rules for setting the status bits
● The static states ´represent the most important data in BATCH. The transition states are
● Only one static state and one transition state may be active simultaneously.
allowed:
allowed:
allowed:
not allowed: HELD and ABORTED
not allowed: HOLDING and ABORTING
Note
Exception: The READY state may be generated at another static state if the IREADY input is
used.
● A group error (bit 31) may be set in addition to any other state.
● The corresponding USTAT_L bit does not have to be set for entries in the "set if" column.
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optional. The RUNNING state may be activated directly after the IDLE state, for example.
Example:
HELD only
ABORTING on its own
HELD and ABORTING (useful in order to be able to detect the original state)
SIMATIC BATCH Interface Blocks V7.1
Function Manual, 03/2009, A5E02171101-01