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60
Operating manual ZX09/20/21-Series
13.2
Program creation in EX_PRESS 5
In the following the program corresponding to the application is shown.
In the first part of the program, marked by "DECLARATION", all necessary variables
are declared and partly also initialized.
Under "VAR_INPUT" four digital input variables for the four sensors are declared for
this purpose. The variables "Light barrier1" and "Light barrier2" correspond to the
respective light barriers, "proximity switch" to the proximity switch and "push button
switch" to the abort switch. These are assigned to terminals 1, 3, 5 and 7 via the "AT"
command specific input terminals.
The output signals are declared under "VAR_OUTPUT". The application requires 3
control signals and one error status signal. The control signals are the control of the
Fig. 31: Principle Diagram of the filling plant
Light barrier 1
Light barrier 2
Belt 1
Belt 2
Belt 3
Push button switch
Proximity switch
Pressure
sensor
