Concept Expansion - Siemens SIMATIC BATCH Operating Manual

Memory allocations
Dynamic part. Occupied by settings in
the BATCH configuration dialog.
The following table shows the runtimes of the most important recipe structures that result from
the processing of a recipe unit procedure and are required to calculate a cycle time.
Recipe structure
Completing recipe phase (average measured value)
Updating setpoint (average measured value)
Processing a transition (average measured value)
Starting recipe phase (average measured value)
Processing a recipe phase (average measured value)
You can find an example of how to determine the memory requirements and the runtime in
the section "Measured results for calculating the performance of both operating modes
(Page 71)".
3.4.2

Concept expansion

Reason for expansion of the concept
Continuously increasing demands for higher product quality while simultaneously maintaining
full plant capacity have caused a variety of branches in the manufacturing industry to improve
and optimize their batch processes again and again.
For example, the food and beverage industry thus expect deterministic and above all fast step
change times from a batch control system because slow step changes can result in a reduction
in product output.
Requirements for fast batch processes
The determining logic of step changes is a basic requirement for both fast and parallel process
sequences, which need to be synchronized to specific steps. Fast process sequences, for
example, enable configuration of exact deceleration points for dosing, while precise parallel
sequences accelerate the material transfer to synchronization steps.
The following requirements must be met to obtain the needed fast batch processes:
● Clear reduction of the step change times to less than one second
● Clearly defined deterministics for the step change times for batch processing
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA
Description
per unit
per recipe unit procedure (RUP)
Product introduction and installation
3.4 Operating modes in SIMATIC BATCH
Memory required in KB
57
128
AS runtime
1.8 ms
0.07 ms
4 ms
1.9 ms
2 ms
43