30 POSITIONING PARAMETER
30.2 Details of Parameters
399
30
Reverse limit
Setting method: Special Device
Reverse limit notifies the CPU module of the reverse limit.
If reverse limit is turned on while positioning operation is being output in the reverse direction, the speed will decelerate, and
the operation will stop. If reverse limit is turned on while positioning operation is being output in the forward direction, it is
ignored. However, it is effective for the PLSY/DPLSY instruction that operates in the forward direction. If reverse limit is turned
on, the operation will stop immediately.
For details on the operation, refer to Page 370 Forward limit and reverse limit. A specific operation pattern is applied
when the DSZR/DDSZR instruction is used. (Page 367 Dog search function) Operation ends with an error after
deceleration stop when a positioning instruction other than the DSZR/DDSZR instruction is used.
■Special Device
During positioning operation, a change in the reverse limit is applied at the next scan.
Name CPU module High-speed pulse input/output module R/W
First module Second module Third module Fourth module
Axis 1 Axis 2 Axis 3 Axis 4 Axis 5 Axis 6 Axis 7 Axis 8 Axis 9 Axis 10 Axis 11 Axis 12
Reverse limit SM5676 SM5677 SM5678 SM5679 SM5680 SM5681 SM5682 SM5683 SM5684 SM5685 SM5686 SM5687 R/W
R/W: Read/Write
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