Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 38

[Md.303] Servo input axis rotation direction restriction amount (R: D35446L+16n/Q:
D12286L+10n)
While the rotation direction is restricted for a servo input axis, the accumulation for input travel value in the opposite direction
of the enabled direction is stored in servo input axis position units as follows. (Page 31 Servo input axis position units)
Setting value of "[Pr.304] Servo input axis
rotation direction restriction"
1: Enable only for current value increase direction
2: Enable only for current value decrease direction
Rotation direction restriction is processed after phase compensation processing. Therefore, if undershoot occurs from phase
compensation during deceleration stop, the rotation direction restriction amount might remain.
4 INPUT AXIS MODULE
36
4.1 Servo Input Axis
Storage details
A negative accumulation is stored during rotation direction restriction.
0 is stored if there is no restriction.
A positive accumulation is stored during rotation direction restriction.
0 is stored if there is no restriction.