Operation if an Error Occurs FP∑ Positioning Unit
15-14
15.3.7 Movement Doesn’t Stop at Home Position (after decelerating for home
return)
Conditions
There is a possibility that the home input has not been read correctly.
Point to check
The home return makes home input subsequent to deceleration valid, so if the home signal is input
during deceleration, that input will end up being ignored.
Solution 1
Forcibly turn the home input sensor ON and OFF from an external source, and check to see if the home
input display LED “Z” on the positioning unit lights.
Solution 2
Check to make sure the input logic for the home input is normally either ON or OFF.
Solution 3
Check the specifications of the control codes in the home return program.
-> Control code: (Refer to page 16-7.)
-> Input valid logic: (Refer to page 10-24.)
Point to check:
If no home input has been connected, the home input will be recognized as being ON.
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