Mitsubishi Electric MELSEC-LD77MS2 User Manual page 725

[1] Control details
The following drawing shows the operation of the hardware stroke limit function.
(1) External input signal of servo amplifier
Lower limit
Mechanical stopper
(2) External input signal via CPU (buffer memory of LD77MS)
Lower limit
Mechanical stopper
LD77MS control moveable range
Movement
Start
direction
Deceleration stop at Deceleration stop at
lower limit switch detection upper limit switch detection
Lower limit switch
LD77MS control moveable range
Movement
Start
direction
Deceleration stop at Deceleration stop at
lower limit switch detection upper limit switch detection
Lower limit switch
Fig. 13.17 Hardware stroke limit function operation
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Chapter 13 Control Sub Functions
Upper limit
Movement
Start
direction
Upper limit switch
Upper limit
Movement
Start
direction
Upper limit switch
Mechanical stopper
Servo amplifier
LD77MS
SSCNET (/H)
Mechanical stopper
Input module
LD77MS