SEW-Eurodrive MOVI-PLC, Manual, Page: 25 / 108

Manual – MOVI-PLC® Application Solution "SyncCrane"
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3
Software limit switches
Project Planning
3.6 Software limit switches
The software limit switch monitoring function is used to check that the target position is
set to appropriate values. During this process, it is not important where the drive is
positioned.
In contrast to the monitoring of the hardware limit switches, the monitoring function for
the software limit switches makes it possible to detect whether there is an error in the
target specifications before the axis starts to move.
3.6.1 Moving clear of the software limit switch
Moving outside the software limit switches is also possible. For this purpose, the
DisableLS bit is assigned in automatic mode in process output data word 1 (PO1) and/
or process output data word 2 (PO).
• For unsynchronized motion PO1:15 / SW LS = TRUE
• For synchronized motion (automatic mode) PO1:15 / SW LS = TRUE and PO2:15 /
SW LS = TRUE
Process input data word 11
Axis 1 actual position high byte
– Actual position axis 1 in user-defined units
Process input data word 12
Axis 1 actual position low byte
– Actual position axis 1 in user-defined units
Process input data word 13
Axis 2 actual position high byte
– Actual position axis 2 in user-defined units
Process input data word 14
Axis 2 actual position low byte
– Actual position axis 2 in user-defined units
Process input data word 15
Axis 3 actual position high byte
– Actual position axis 3 in user-defined units
Process input data word 16
Axis 3 actual position low byte
– Actual position axis 3 in user-defined units
Data word Bit no. Description