Basics Of Batch Control; Principle Of Batch Control; Order Of Batch Processing - Siemens SIMATIC BATCH Operating Manual

BATCH Control Center
9.8 Batch control
Changing setpoints (Page 449)
Commands for controlling batches (Page 414)
Commands for recipe steps (Page 416)
Locking a batch (Page 374)
Canceling a batch (Page 375)
9.8.3

Basics of batch control

9.8.3.1

Principle of Batch Control

Definition
By batch control, we mean the following:
● Batch execution
● Visualization and control of the batches on the PCS 7 OS
Batch execution
The program checks which units are required to start each released batch. Based on the
UNIT_PLC blocks, a check is made to find out whether the units have been released for use
by SIMATIC BATCH and are not allocated to other batches. If the units are free and released,
the batch can be started, otherwise the relevant parameters are reported for monitoring.
Batch control is always ready to receive OS messages about parameter changes. If a
monitored parameter changes, batch control is informed and takes the required action.
Visualization and operator control of the batches
In BatchCC, the control recipe for a batch can be opened. The presentation of the control
recipe corresponds to that of the BATCH Recipe Editor. While a batch is being made, the
states of steps and transitions are displayed color-coded. The dynamic display of events on
the monitor also allows an operator to intervene.
9.8.3.2

Order of batch processing

Order of processing
In SIMATIC BATCH the execution sequence of created batches (status: planned) is
determined by the order of their release. All released batches are included in batch control in
the order or their releases. Batches that do not use the same units and equipment modules
can also be processed at the same time.
When the required units at the start of the control recipe are free, the batches are started
"immediately", "time-driven" or by the "operator", depending on the selected start mode. If
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SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA