GSK 218M, Руководство по подключению и программированию PLC

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GSK218M CNC System Connection and PLC Manual
177
System parameter number
0 3 1 G23
G23
=1: The soft limit function is ON when the power is turned on.
=0: The soft limit function is OFF when the power is turned on.
4.4 Gear ratio adjustment
When the machine move distance is not uniform with the displacement distance of coordinate
display, NO.160~ NO.169 are modified to adjust the electronic gear ratio to meet to the different
machine driving ratio.
Division/multiplying of positioning command pulse (electronic handwheel/MPG).
In position control mode, it can match with all pulse source by setting parameters to get the
required resolution(angle/pulse).
Computation formula:
4
× × = ×
C N G P
Division numerator: command multiplying coefficient （ system parameter NO.160, NO.161,
NO.162, NO.163, NO.164
）
Division denominator: command division coefficient （ system parameter NO.165, NO.166,
NO.167, NO.168, NO.169
）
P
：
pulse quantity of input command;
G
：
electronic gear ratio;
N
：
motor rotation rev;
C
：
photoelectric encoder lines/rev
，
the system C
＝
2500.
【
Example
】
When the input instruction pulse is 6000, the servo motor rotates 1 rev.
3
5
6000
4 2500 1 4
=
× ×
=
× ×
=
P
C N
G
Data parameter NO. 160
（
CMRX
）
=5
，
NO.165
（
CMDX
）
=3
；
The ratio between the system gear and the parameter has the same function that of digital servo
gear and parameter. When the system is employed with the digital servo with the electronic gear
ratio function, the electronic gear ratio is set to 1:1, which is set to the digital servo.
When the CNC is adopted with the stepper driver, it should use the stepper division driver as
possible, v and the proper machine driving ratio, and set the electronic gear ratio to 1:1 to adovid
the large difference between the numerator and denominator.