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Packages arriving on a roller conveyor are scanned by a proximity switch (B0). If a package is present, it is lifted by cylinder A and then pushed onto another belt by cylinder B. Cylinder B should only move in again when cylinder A has reached its basic position again. A separation of the packages on the loading side took place beforehand. The cylinders are controlled by electromagnetically operated 5/2-way valves with spring return. The system can be reset centrally using the S1 button.
Input / output assignment
The inputs and outputs of the model are assigned as follows (the designation input or output refers to
in each case on the connected controller):
Input No. Name TwinCAT-variable name Description
1 S1 I_S1 Start button (normally closed)
1 B0 I_B0 Sensor package available (normally open)
2 B1 I_B1 Limit switch cylinder 1 retracted (normally open)
3 B2 I_B2 Limit switch cylinder 1 extended (normally open)
4 B3 I_B3 Limit switch cylinder 2 retracted (normally open)
5 B4 I_B4 Limit switch cylinder 2 extended (normally open)
6 S1 I_S1 Start button (normally closed)
Output No. Name TwinCAT-variable name Description
1 Y1 O_Y1 Spring return cylinder 1
2 Y2 O_Y2 Spring return cylinder 2
3 M1 O_M1 Conveyor on