How Are Ieph/Ieop Blocks Connected To The User Blocks - Siemens SIMATIC BATCH Operating Manual

Changes to SFC types without changes to the interface do not have effects on running batches
in SIMATIC BATCH.
12.5

How are IEPH/IEOP blocks connected to the user blocks?

Special case
if you want to connect a recipe step to a self-created user block (SCL code), you should base
this on description below.
The IEPH/IEOP block acts as an interface
The IEPH/IEOP block serves as the interface between a BATCH recipe step of the type RPH
(recipe phase) and a self-created user block in the automation system for control and status
information.
Description of functions
The IEPH/IEOP block is used to pass on the batch control commands to the user block (basic
function blocks) and process the status messages of the user block in the status word of the
IEPH/IEOP block for batch control.
The user block contains the status processing for an equipment phase. The internal algorithm
only permits the status transitions described below.
Note
The user program must comply precisely with these conditions so that SIMATIC BATCH can
process the "equipment phase" according to the BATCH specifications.
The user block must be processed in the same cycle as the corresponding IEPH/IEOP block.
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA
12.5 How are IEPH/IEOP blocks connected to the user blocks?
Recommended procedure
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