Mitsubishi Electric M800VS Series Connection And Set Up Manual page 514

M800VS/M80V Series Connection and Setup Manual
24 Setting the Machine Error Compensation
24.1 Memory-type Pitch Error Compensation/Memory-type Relative Position Error Compensation
Incremental amount method
Here, the compensation amount at division point "n" is calculated for the axis moved by the "interval between division points"
as specified by #4007. The formula used to calculate compensation amount will differ depending on whether division point "n"
is on the positive side or the negative side from the reference position.
[On the positive side]
Actual travel amount = (Actual machine position of division point "n") - (Actual machine position of division point "n-1") (See
left figure below)
Compensation amount = (Interval between division points - Actual travel amount) × 2
[On the negative side]
Actual travel amount = (Actual machine position of division point "n") - (Actual machine position of division point "n+1") (See
right figure below)
Compensation amount = (Interval between division points + Actual travel amount) × 2
In both cases, the unit of compensation amount depends on the setting of the machine error compensation unit ("#1006
mcmpunit").
n-1 n
i
Unit of compensation amount
Range of compensation amount : -128 to 127
i
n n+1
: Machine error compensation unit (#1006)
483
n : Division point
compensation number
i : Division interval
IB-1501613-A