Siemens SIMATIC HMI OP3 Equipment Manual page 59

Example
The OP3 is used to operate and monitor a system for producing and bottling
different fruit juices. The system consists basically of a mixing unit and a
bottling machine.
Mixing unit
The ingredients for the fruit juices are contained in three tanks.
Depending on the juice that you wish to manufacture, ingredients are mixed
in certain ratios.
Bottling machine
After it has been mixed, the fruit juice flows into the bottling tank after a
valve has been opened and is then bottled in the correct quantities. The
bottles are conveyed on a belt. Before being filled, they are checked for
breakages. After they have been filled, the bottles are capped, labeled and
transferred to pallets.
The configured basic screen might be as shown in figure 11-2. It consists of
static text only.
Figure 11-2 Start Screen of the System (Example)
The screen segment on the display can be moved horizontally with the soft
keys beneath the symbols << and >>.
Pressing the soft key beneath the Mix entry allows you to view the entry
shown in figure 11-3. It similarly consists only of static text which refers to
other screens (Tank2, Tank3 and Mixer).
Figure 11-3 Screen with Static Text (Example)
If you press the Tank2 soft key, the entry shown in figure 11-4 appears. This
entry contains static text and an output field (Tank Contents) and an input
field (Valve Position). The position of the tank valve can be set in the input
field by means of a symbolic value input – for example, OPEN or CLOSED).
Figure 11-4 Screen with Input and Output Fields (Example)
Operator Panel OP3
Edition 11/99
Mix Bottle
<< | |
Tank2 Tank3 Mixer
<< | |
Contents: 371 liters
Valve: OPEN
Process-Dependent Operator Guidance
>>
|
>>
11-3