SW4000 USER’S MANUAL
VER5.13 53
“1” separately. “0” means the opposite counter direction
for “1” , in other words, “0” means A signal exceed B
signal and the counts increase during counting. Vice
versa.
Message window displays “SEL AXIS”, which
means the next step is to select axis.
3. Select axis
Press
X
to change X axis counting direction;
Press
Y
to change Y axis counting direction;
Press
Z
to change Z axis counting direction;
4. Press
ENTER
to confirm your selection and exit.
Press
AC
to cancel your change and exit.
7.4
Setting Linear Compensation
Definition
Linear error: There is always an error between actual measure value and standard value. If it is
distributed around the scale travel linearly, the error is defined as linear error. For
example, the scale valid length is 400mm.if the measure value is 400mm and the
standard value is 400.040mm: There is a
△
L of 40
µ
m. If 40
µ
m is distributed around
the scale linearly, there is a
△
L of 10
µ
m when the scale travels 100mm; a
△
L of
20
µ
m when the scale travels 200mm; a
△
L of 30
µ
m when the scale travels 300mm.
Linear compensation: Compensate the linear error to make display value equals to standard value.
NOTES: The linear compensation is set by erector. Operator had better not change it, or the accuracy of
linear scale will be worse.
Default coefficient: 0
The calculation of compensation coefficient:
coefficient =
Example:
Measurement 400.000mm
Standard value 400.040mm
Compensation value (400.000 - 400.040) X 1000, 000 / 400 = -100
Unit:
µ
m/m;
Set linear error compensation: X axis is 100; Y axis is 50; Z axis is –100.
STEPS:
(measurement - standard value) X 1000,000
standard value
