Siemens SIMATIC BATCH Operating Manual page 367

If there are several candidates for an RUP (hierarchical recipe) or an RPH (flat recipe) then
the upper and lower parameter limits are displayed in green. These limit values are adjusted
according to the respective parameters of all possible units, i.e. the smallest lower limit for the
lower limit and the largest upper limit for the upper limit. The values displayed in tooltip are
calculated acc. to the above-mentioned formula for linear adjustments.
Batch
When creating a control recipe (batch), the actual amount prepared may deviate from the
standard preset mix (the standard mix is always preset). The control recipe must be released
for production. The nominal values set in the basic recipe are only adjusted on release, i.e.
the actual volume adjustment is made here. The nominal values are re-calculated according
to the set adjustment (linear and quadratic) but only when the prepared amount is different to
the standard mix. If the prepared amount is not changed at the control recipe then there is also
no adjustment of the volume.
After the nominal values have been adjusted, they are checked against the limits of all possible
units. If the result of this check is that no unit fulfills the limits then release of the control recipe
is refused with a corresponding message.
When checking the adjusted nominal values, the limits from engineering are always used and
never the dynamically calculated limits of the recipe. The dynamically calculated limits are only
an aid for the creator of the recipe to avoid limit violations that are only noticed when the batch
is released.
Note
There are also batch releases that may lead to limit violations during the runtime of the batch,
particularly in case of executed loops; refer also to Example 2. The system can not always
support you here in all cases! The user must accept responsibility here and make test runs of
the recipe such as, e.g. a water run.
Example 1
A recipe has the following requirements:
Recipe header
Reference quantity
Minimum quantity
Maximum quantity
Unit
Lower limit of nominal value
Upper limit of nominal value
Setpoint
SIMATIC BATCH V8.2
Operating Manual, 02/2016, A5E35958174-AA
①
REF
Recipe
②
LL
Recipe
③
HL
Recipe
LL
SP
HL
SP
SP
BATCH Control Center
9.6 Batch Planning
1000 liter
100 liter
5000 liter
Unit A Unit B
100 0
1500 100
250 50
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