The position error, which is the difference between the commanded position and the actual position
can be interrogated with the instruction TE.
Instruction Interpretation
TE Tell er
or
all axes
TE A Tell error
A axis only
TE B Tell error
B axis only
TE C Tell error
C axis only
TE D Tell error
D axis only
Absolute Position
Objective: Command motion by specifying the absolute position.
Instruction Interpretation
DP 0,2000 Define the current positions of A,B as 0 and 2000
PA 7000,4000 Sets the desired absolute positions
BG A Start A motion
BG B Start B motion
After both motions are complete, the A and B axes can be command back to zero:
PA 0,0 Move to 0,0
BG AB Start both motions
Velocity Control
Objective: Drive the A and B motors at specified speeds.
Instruction Interpretation
JG 10000,-20000 Set Jog Speeds and Directions
AC 100000, 40000 Set accelerations
DC 50000,50000 Set decelerations
BG AB Start motion
after a few seconds, command:
JG -40000 New A speed and Direction
TV A Returns A speed
and then
JG ,20000 New B speed
TV B Returns B speed
These cause velocity changes including direction reversal. The motion can be stopped with the
instruction
ST Stop
DMC-2X00 Chapter 2 Getting Started y 33