Siemens SIMATIC BATCH Operating Manual page 568

BATCH Recipe Editor
10.4 Creating recipes
Equipment limits = Parameter limits for equipment modules. Basic engineering
Recipe limits = Parameter limits for different products. Recipe engineering
Checking the recipe limits
The inputs for parameter limits are checked during recipe creation as well as before batch
release. In so doing, the writing of setpoints is always checked against the recipe limits. Target
and cross-interconnections are also setpoint changes that are checked. When the recipe is
created, each limit violation within the validation is output as a warning. During batch operation,
messages are displayed in the "Extended batch information" window in BatchCC.
The recipe limits and the associated setpoints are changed during quantity adaptation (linear
or quadratic).
Additional information: Scaling functions (Page 579)
Interaction between equipment and recipe limits
Recipe limits are optional and are not required in a master recipe or for a batch. If you specify
only the high recipe limit for a setpoint, the low limit obtains its value from the equipment
module. If you do not specify any recipe limits, the limits of the equipment modules apply.
Input and representation of recipe limits
You enter recipe limits for recipe phases, operator instructions, and parameter steps. The limits
are displayed in the "Parameters", "Input material", and "Output material" tabs of the
"Properties" dialog of a recipe phase, container (RUP, ROP, SUB), and formula. For active
batches, the recipe limits can be changed exclusively via OSC (online structure changes) on
batches released for testing with appropriate OSC user permission.
Recipe limits cannot be viewed or changed on faceplates.
Representation in reports
The batch report contains no limits. Both equipment and recipe limits are displayed in the
master recipe report.
Use scenario
A "Reactor" unit contains the "Heater" equipment phase, among other things. The heater has
a range from 20 °C to 100 °C. These temperature values form the low and high equipment
limits that a setpoint/initial value must be within. During production of a specific product on this
equipment, however, there are product-specific limits for the heater that must be complied
with. In case of non-compliance, the product will be faulty. In this situation, you use the new
additional recipe limits for the recipe creation in the BATCH Recipe Editor. This further limits
the setpoint/initial value within the engineering limits so that the optimum product quality is
achieved. If you now specify a setpoint/initial value that is outside the recipe limits, you will be
notified of a limit violation. A valid setpoint/initial value must be entered to continue work.
568
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA