Memory-Type Pitch Error Compensation/Memory-Type Relative Position Error Compensation; Outline - Mitsubishi Electric M800W Series Connection And Set Up Manual

M800W/M80W Series Connection and Setup Manual
27 Setting the Machine Error Compensation
27.1 Memory-type Pitch Error Compensation/Memory-type Relative
Position Error Compensation

27.1.1 Outline

(1) Memory-type pitch error compensation
According to the specified parameters, this method compensates an axis feed error caused by a ball screw pitch
error, etc.
You can set compensation amount for each division point obtained by equally dividing the machine coordinates
based on the reference position. (See the figure below.)
The compensation amount can be set by either the absolute or incremental amount method. Select the method with
"#4000 Pinc".
Machine position between division points "n" and "n+1" is smoothly compensated by the linear approximation of the
compensation amount.
Actual machine position
Reference position
Compensation
amount
Relationship between the compensation amount and machine position
IB-1501268-K
Ideal machine
position
▲ ▲
Compensation
amount
between two
division points
▲
▲
n n+1 n+2
522
Actual machine position
without compensation
Commanded machine
position
▲
: Division point
▲
Commanded machine
▲
position