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6. APPLICATION FUNCTIONS
6.1.2 Settings
Control parameters
Parameter No.
(Note)
A
bbreviation
Name
Initial
Value
Unit
Setting
range
Function
020A *CMXL Electronic gear
numerator (lower)
0001h 1 to
5242879
(32 bits)
Set the numerator for electronic gears.
020B *CMXH Electronic gear
numerator (upper)
0000h
020C *CDVL Electronic gear
denominator
(lower)
0001h
1 to
589823
(32 bits)
Set the denominator of the electronic gear.
020D *CDVH Electronic gear
denominator
(upper)
0000h
Note. The parameters with a * mark at the front of the parameter abbreviation become valid when the system is started.
6.1.3 Setting example of electronic gears
The following is a setup example for use of µm as a command unit for a piece of equipment that uses ball
screws.
(1) Equipment specification
Item Symbol Value Unit Remarks
Ball screw lead Pb 10 mm =10000m
Deceleration ratio n 1/2
Number of encoder pulses per revolution Pt 4194304 pulse/rev
Servo motor
Pt = 4194304
Deceleration constant n = 1/2
Ball screw pitch Pb = 10 [mm]
Number of encoder pulses
per revolution
(2) Calculation of electronic gears
CM
X
CD
V
P
t
n Pb
4194304
1/2 10000
4194304
5000
400000h
1388h
S
P
t
Note.
S is the movement amount for 1 revolution of the servo motor.
(3) Parameter settings
Because the value obtained by calculating the electronic gear is within the setting range, the value can be
set without reducing.
Parameter No.
(Note)
Abbreviation
Name Setting value
020A *CMXL Electronic gear numerator (lower) 0000h
020B *CMXH Electronic gear numerator (upper) 0040h
020C *CDVL Electronic gear denominator (lower) 1388h
020D *CDVH Electronic gear denominator (upper) 0000h
Note. The settings for the parameters with a * mark at the front of the abbreviation are validated when the system is
restarted.