DMC-18x6 Command Reference
100
GR
FUNCTION: Gear Ratio
DESCRIPTION:
GR specifies the Gear Ratios for the geared axes in the electronic gearing mode. The master axis
is defined by the GA command. The gear ratio may be different for each geared axis. The
master can go in both directions. A gear ratio of 0 disables gearing for each axis. A limit
switch also disables the gearing unless gantry mode has been enabled (see GM command).
ARGUMENTS: GR n,n,n,n,n,n,n,n or
GRA=n where
n is a signed numbers in the range +/-127, with a fractional resolution of
16
2
1
.
n = 0 Disables gearing
n = ? Returns the value of the gear ratio for the specified axis.
USAGE: DEFAULTS:
While Moving
Yes
Default Value
0
In a Program
Yes
Default Format
3.4
Command Line
Yes
Controller Usage
ALL CONTROLLERS
OPERAND USAGE:
_GRn contains the value of the gear ratio for the specified axis.
RELATED COMMANDS:
Master Axis
Mode
EXAMPLES:
#GEAR
MOB
Turn off servo to B motor
GAB,,B
Specify master axis as B
GR .25,,-5
Specify A and C gear ratios
EN End
program
Now when the B motor is rotated by hand, the A will rotate at 1/4th the speed and C will rotate 5
times the speed in the opposite direction.
Hint: when the geared motors must be coupled "strongly" to the master, use the gantry mode GM.
