Mitsubishi Electric RD77MS2 User Manual page 222

Setting method
To use the "home position return retry function", set the required details in the parameters shown in the following table, and
write them to the Simple Motion module.
When the parameters are set, the home position return retry function will be added to the machine home position return
control. The set details are validated at the rising edge (OFF  ON) of the PLC READY signal [Y0]. Set "[Pr.57] Dwell time
during home position return retry" according to the user's requirements.
Setting item
[Pr.48] Home position return retry
[Pr.57] Dwell time during home position
return retry
Refer to the following for the setting details.
Page 407 Basic Setting
• Parameters are set for each axis.
• It is recommended that the parameters be set whenever possible with the engineering tool. Execution by a
program uses many programs and devices. The execution becomes complicated, and the scan times will
increase.
8 CONTROL SUB FUNCTIONS
220
8.2 Sub Functions Specifically for Machine Home Position Return
Setting Setting details
value
1 Set "1: Carry out home position return retry by limit switch".

Set the deceleration stop time during home position return retry.
(Random value between 0 and 65535 (ms))
Factory-set initial
value
0
0