Newport New Focus Picomotor 8743-CL User Manual page 110

110
12. Following Error (see FE command)
13. Units (see SN commands)
14. Hardware Configuration (see ZH command)
1VA1750
Example
SM
XX, *RCL
See Also
SN
Axis displacement units set.
Description
xxSNnn
Syntax
This command is used to set the displacement units of an axis.
Remarks
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
xx
nn
1SN0
Example
2SN1
SN?, CL, FE, MM, DB
See Also
(See motor 1 velocity)
(Save settings to non-volatile memory)
Value Description
1 to 2 Axis number
0 Units are steps (open-loop mode).
1 Units are encoder counts. Default = 1
(set displacement units to steps)
(set displacement units to encoder counts)