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M800W/M80W Series Connection and Setup Manual
27 Setting the Machine Error Compensation
Setting pitch error compensation data
(1) Move the axis to positive or negative direction, then measure and record actual machine position of each division
point. Calculate compensation amount for each division point based on the actual machine position.
#4000
setting value
0
(Absolute amount
method)
1
(Incremental
amount method)
(*1) Compensation amount unit depends on the setting of the machine error compensation unit (parameter "#1006
mcmpunit").
(2) Set the calculated compensation amount to the parameter of compensation No. allocated to each division point.
(-1)
(1)
#4101
#4102
Direction of reference
position return
#4107
#4108
(0)
(-4)
[Compensation amount settings]
Movement direction
Compensation data No.
Incremental
amount method
Compensation
amount
Absolute
amount method
IB-1501268-K
Calculation method of compensation amount (*1)
Compensation amount = (Commanded machine position - Actual machine position) × 2
Calculate compensation amount at the division point "n" when the position moved by "interval between
two division points" which was set to #4007. The calculation formula of the compensation amount differs
depending on whether the division point "n" is on positive side or 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")
Compensation amount = (Interval between two 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")
Compensation amount = (Interval between two division points + Actual travel amount) × 2
(0)
(-2)
(3)
(-2)
(3)
(-3)
(-2)
(0)
#4103
#4104
#4105
Error
3
2
1
- 1
- 2
- 3
#4109
#4110
#4111
(3)
(1)
(-3)
(-1)
(-1)
(-3)
(-4)
(-4)
Bidirectional pitch error (linear axis)
Positive
#4101 #4102 #4103 #4104 #4105 #4106 #4107 #4108 #4109 #4110 #4111 #4112
-2
0
6
2
6
-6
(1)
Compensation amount in positive direction
(Absolute amount method)
Compensation amount in positive direction
(3)
(Incremental amount method)
#4106
Error amount in negative direction
Basic axis machine coordinate
Error amount in positive direction
Reference when the movement direction is negative
#4112
Compensation amount in negative direction
(1)
(Incremental amount method)
Compensation amount in negative direction
(Absolute amount method)
(-3)
-4
-4
2
-8
-4
0
6
0
532
Negative
-8
-2
-6
-8
6
2
-6
-2
-6
2
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