Mitsubishi Electric MELSEC-Q Series - Page 425

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6 POSITIONING CONTROL
(4) Home position return by the dogless home position signal reference
method (Operation C)
"Operation C" of a home position return by the dogless home position signal
reference method is shown in Fig. 6.48 and Fig. 6.49.
(a) When the position where address of absolute linear encoder becomes 0 is in
the home position return direction.
1) It travels to preset direction of home
position return with the creep speed.
2) The home position return ends the
position where address of absolute
linear encoder becomes 0.
V
Home position
return start
1)
2)
Home position
return direction
Creep speed
Home position
Linear encoder address=0
Linear encoder
address
Fig. 6.48 Home position return by the dogless home position signal reference
method (Operation C)
POINT
(1) If an external limit switch is detected during home position return operation, an
error occurs and stops.
(2) Home position return retry function cannot be used.