108 ● FI DMC-40x0 Command Reference
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. There are 2 stages to the FI command. The
first stage jogs the motor at the speed and direction of the JG command until a transition is
detected on the index line. When the transition is detected, the position is latched and the
motor will decelerate to a stop. In the second stage, the motor will reverse direction and move
to the latched position of the index pulse at the speed set by the HV 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
HV Homing Velocity
EXAMPLES:
#HOME ;'Home Routine
JG 500 ;'Set speed and forward direction
FIA ;'Find index
BGA ;'Begin motion
AMA ;'After motion
MG "FOUND INDEX"
EN
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.
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