Newport New Focus Picomotor 8743-CL, User Manual

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PR
Description
Relative move command.
Syntax
xx PR nn
Remarks
This command is used to move an axis by a desired relative distance. If this command is issued
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
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)
Issue a Stop (ST) or Abort (AB) motion command to terminate motion initiated by PR
Argument Value Description
xx 1 to 2 Axis number
nn
Integer Relative distance (steps). Default = 0 steps. Valid values
between -2147483648 and +2147483647 .
Example
1PR-200000 (Move motor 1 relative negative 200000 steps)
See Also
MV, PA, SN