Optima DMC-1xxx and DMC-18x2 Command Reference
GA
i
94
GA
FUNCTION: Master Axis for Gearing
DESCRIPTION:
The GA command specifies the master axes for electronic gearing. Multiple masters for
gearing may be specified. The masters may be the main encoder input, auxiliary encoder
input, or the commanded position of any axis. The master may also be the commanded
vector move in a coordinated motion of LM or VM type. When the master is a simple
axis, it may move in any direction and the slave follows. When the master is a
commanded vector move, the vector move is considered positive and the slave will move
forward if the gear ratio is positive, and backward if the gear ratio is negative. The slave
axes and ratios are specified with the GR command and gearing is turned off by the
command GR0.
ARGUMENTS: GA n,n,n,n,n,n,n,n
or
GAA=n
where
n can be A,B,C,D,E,F,G, H or N. The value of n is used to set the specified main encoder
axis as the gearing master and N represents the virtual axis. The slave axis is specified by
the position of the argument. The first position of the argument corresponds to the 'A'
axis, the second position corresponds to the 'B' axis, etc. A comma must be used in place
of an argument if the corresponding axes will not be a slave.
n can be CA,CB,CC,CD,CE,CF,CG or CH. The value of x is used to set the commanded
position of the specified axis as the gearing master.
n can be S or T. S and T are used to specify the vector motion of the coordinated system, S or
T, as the gearing master.
n can be DA,DB,DC,DD,DE,DF,DG or DH. The value of n is used to set the specified
auxiliary encoder axis as the gearing master.
USAGE: DEFAULTS:
While Moving Yes
Default
Value
In a Program Yes
Default
Format
Command Line
Yes
Controller Usage
ALL CONTROLLERS
RELATED COMMANDS:
"
GR
" Gear
Ratio
"
GM
" Gantry
Mode
EXAMPLES:
#GEAR Gear
program
GA ,A,T
Specify A axis as master for B and vector motion on T as master for C
GR ,.5,-2.5
Specify B and C ratios
JG 5000
Specify master jog speed
BGA Begin motion
WT 10000
Wait 10000 msec
STA Stop
Hint: Using the command position as the master axis is useful for gantry applications. Using the
vector motion as master is useful in generating Helical motion.
