Siemens SIMATIC BATCH Operating Manual page 698

Recommended procedure
12.8 How do I configure and use dynamic unit parameters?
Inserting IEPAR_X blocks and interconnecting them with unit block "UNIT_PLC"
You can connect all parameter interface blocks of the different data types with a "UNIT_PLC"
unit block using the "EPE_CONN" I/O.
1. Open a chart in the CFC chart containing a "UNIT_PLC" unit block of your process cell.
Setpoints are passed to SIMATIC BATCH at this unit block.
2. Select the "Libraries" tab and navigate to the parameter interface blocks in the BATCH
block library.
Image 12-10 BATCH parameter interface blocks
3. Insert the parameter interface blocks required for your configuration in the open chart. The
blocks of type BOOL, ENUM, REAL and DINT are configured as an example for later use
in SIMATIC BATCH. Then interconnect the "EPE_CONN" I/O at the "UNIT_PLC" block with
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SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA