Newport New Focus Picomotor 8743-CL, User Manual

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110
12. Following Error (see FE command)
13. Units (see SN commands)
14. Hardware Configuration (see ZH command)
Example
1VA1750 (See motor 1 velocity)
SM (Save settings to non-volatile memory)
See Also
XX, *RCL
SN
Description
Axis displacement units set.
Syntax
xx SN nn
Remarks
This command is used to set the displacement units of an axis.
The inherent Picomotor positioner operates in steps and is open-loop. However, when a
quadrature encoder is integrated into a Picomotor positioner and those signals are brought to the
controller’s feedback connector then it is possible to monitor real position using encoder
‘Counts’. The use of ‘Counts’ as positioning units makes possible closed-loop control.
However, when the control is set to use ‘Steps’ as positioning units then only open-loop control
is possible.
NOTE: If units set to ‘Steps’ (SN=0) then only open-loop positioning is possible.
Argument Value Description
xx
1 to 2 Axis number
nn 0 Units are steps (open-loop mode).
1 Units are encoder counts. Default = 1
Example
1SN0 (set displacement units to steps)
2SN1 (set displacement units to encoder counts)
See Also
SN?, CL, FE, MM, DB