17 Appendix
17.1 Function plans
On the following pages, you can fi nd proven fundamental function plans for control
tasks in transfer systems.
Characters are used in the action blocks that deviate from DIN IEC 611313.
They are explained in the following table.
Simple VE 2 stop gates are used to stop workpiece pallets. The position of the
workpiece pallets is determined using separate proximity switches.
Action block
Explanation
S
Storing
NS
Non-storing
S
Set
R
Reset
T3
T3
?
NS
D
S
S Y2.1
Non-storing trigger of a time function (with runtime T),
after which a switching function is triggered.
General abbreviations
WT
=
Workpiece pallet
VE
=
Stop gate
S … =
Signal transmitter
Y …
=
Valve
Z … =
Cylinder
LT
=
Longitudinal conveyor (main section)
QT
=
Transverse conveyor (secondary section)
=
Start pulse after end of start-up
=
Enable cyclic travel
Appendix 65/72
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