101
• If +OT or -OT is set as a reference signal for homing (deceleration starting signal), this parameter is
disabled and the direction opposite to the one toward the specified OT signal is the homing direction.
The definition of the direction of motion is shown below.
Forward: direction of position increase Reverse: direction of position decrease
*
P2.11
Reference signal for shift operation
Default value
1
Setting range
0: Home position LS 1: Encoder Z-phase
2: +OT 3: -OT
4: Interrupt input 5: Stopper
Specify the signal serving as a standard of the home position.
Specify the signal serving as a standard of the home position.
The position of a travel from the specified reference signal toward the homing direction after reference signal
detection by the home position shift unit amount is the home position.
The home position accuracy (reproducibility of zero position) is the highest with 1 (encoder Z-phase).
If the Z-phase is selected, the reference signal for shift operation can be installed.
Except the encoder Z-phase, 4 (interrupt input) has higher home position accuracy than other signal
(reproducibility of zero position).
This is because 4 (interrupt input) detects the interrupt position with a signal while 0 (home position LS), 2
(+OT) and 3 (-OT) detects a level.
Interrupt input
−OT
+OT
Home
position LS
Encoder Z-phase
Reference signal for
shift operation
Home position shift unit amount
• If one among 0 (home position LS), 2 (+OT) and 3 (-OT) is selected, there is an error of ±250 pulses in the
zero position at a creep speed for homing of 50 r/min.
