Galil Motion Control optcom Page 101
Optima DMC-1xxx and DMC-18x2 Command Reference
FI
i
90
FI
FUNCTION: Find Index
DESCRIPTION:
The FI and BG commands move the motor until an encoder index pulse is detected. The
controller looks for a transition from low to high. When the transition is detected, motion
stops and the position is defined as zero. To improve accuracy, the speed during the
search should be specified as 500 counts/s or less. The FI command is useful in custom
homing sequences. The direction of motion is specified by the sign of the JG command.
ARGUMENTS: FI nnnnnnnnnn
where
n is A,B,C,D,E,F,G or H or any combination to specify the axis or sequence
No argument specifies all axes.
USAGE: DEFAULTS:
While Moving
No
Default Value
In a Program
Yes
Default Format
Command Line
Yes
Controller Usage
ALL CONTROLLERS
RELATED COMMANDS:
"FE "
Find Edge
"HM "
Home
"BG "
Begin
"
AC
" Acceleration
Rate
"DC "
Deceleration Rate
"SP "
Search Speed
EXAMPLES:
#HOME Home
Routine
JG 500
Set speed and forward direction
FIA Find
index
BGA Begin
motion
AMA After
motion
MG "FOUND INDEX"
Hint: Find Index only searches for a change in state on the Index. Use FE to search for the Home.
Use HM (Home) to search for both the Home input and the Index. Remember to specify BG after each
of these commands.
