Newport New Focus Picomotor 8743-CL User Manual page 102

102
PR
Relative move command.
Description
xxPRnn
Syntax
This command is used to move an axis by a desired relative distance. If this command is issued
Remarks
when an axis' motion is in progress, the controller will ignore this command and generate
"MOTION IN PROGRESS" error message.
While operating in closed-loop mode, the Model 8743-CL will respond to motion command
displacements based upon increments of the closed-loop Picomotor positioner's internal optical
encoder, rather than by actual Picomotor steps. The controller will automatically determine the
appropriate number of Picomotor steps needed to accomplish the target encoder counts based
displacement.
NOTE: If positioning Units are set to 'Steps' (SN=0) then displacements will be in terms
Issue a Stop (ST) or Abort (AB) motion command to terminate motion initiated by PR
Argument
xx
nn
1PR-200000
Example
MV, PA, SN
See Also
of Picomotor steps whereas if Units are set to 'Counts' then displacements will
be in terms of closed-loop Picomotor positioner encoder counts. (See SN
command)
Value
1 to 2
Integer
(Move motor 1 relative negative 200000 steps)
Description
Axis number
Relative distance (steps). Default = 0 steps. Valid values
between -2147483648 and +2147483647.