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17 Appendix
17.1 Function plans
On the following pages, you can fi nd proven fundamental function plans for control
tasks in transfer systems.
Contrary to DIN IEC 61131-3, qualifi ers are used in the action blocks, which are
explained in the table below.
Simple VE 2 stop gates are used to stop the workpiece pallets. The position of the
workpiece pallets is determined using separate proximity switches.
Action block
Explanation
S
Storing
NS
Non-storing
Set
S
Reset
R
Non-storing triggering of a time function (with cycle time T).
NS
D
T3
T3
After it has been concluded, a switch function is triggered.
?
S
S
Y2.1
General abbreviations
WT
= Workpiece pallet
VE
= Stop gate
S ... = Signaling device
Y ... = Valve
Z ... = Cylinder
LT
= Longitudinal conveyor (main section)
QT
= Transverse conveyor (adjacent section)
= Start pulse after end of start-up
= Release cyclic travel
3 842 358 792/2016-12, Material and information fl ow technology: HQ 2/C-H, HQ 4, Bosch Rexroth AG
Appendix
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