Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 404

Set home position return retry function to "valid".
When set as "invalid" at the detection of the external limit switch, an error occurs and stops.
■Operation B
"Operation B" of a home position return by the dogless home position signal reference method is shown below.
Home position
V
return direction
Creep speed
(1)
Home position
return start
• If an external limit switch is detected during home position return operation, an error occurs and stops.
• Home position return retry function cannot be used.
■Operation C
"Operation C" of a home position return by the dogless home position signal reference method is shown below.
• When the position where address of absolute linear encoder becomes 0 is in the home position return direction
Home position
V
return direction
Creep speed
(1)
Home position
return start
Linear encoder
address
• If an external limit switch is detected during home position return operation, an error occurs and stops.
• Home position return retry function cannot be used.
5 POSITIONING CONTROL
402
5.21 Home Position Return
(1)
(2)
(2)
Home position
(1)
(2)
(2)
Home position
Linear encoder address=0
It travels to preset direction of home
position return with the creep speed.
The home position return ends with
first zero point.
Zero point
It travels to preset direction of home
position return with the creep speed.
The home position return ends the
position where address of absolute
linear encoder becomes 0.