Newport New Focus Picomotor 8743-CL, User Manual

Page: 111 / 133

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SN?
Description
Axis displacement units query.
Syntax
xx SN ?
Remarks
This command is used to query the displacement units for an axis.
Argument Value Description
xx 1 to 2 Axis number
Response Value Description
Value 0 or 1 Steps or Encoder counts
Example
2SN? (get displacement units)
1 (reply; 1)
See Also
SN
SR
Description
Positive software travel limit set.
Syntax
xx
SR
nn
Remarks
This command is used to set the positive software travel limit for an axis. If this command is
issued when an axis’ absolute position search is in progress, the controller will generate
“COMMAND NOT ALLOWED DURING HOMING” error message. The controller will
generate “PARAMETER OUT OF RANGE” error message if the value specified is lower than
the negative software travel limit. This value can be saved in controller’s non-volatile memory
by issuing “SM” command. If define home (DH) command is issued after this command is
issued, the controller will adjust the software travel limits and temporarily override the value
specified using this command. The temporarily modified software limits are not saved in
controller’s non-volatile memory. This allows the controller to preserve user-specified
software limits. Bit #3 in hardware configuration register (refer ZH command) must be set to 1
in order for the controller to check for any software travel limit violations.
Argument Value Description
xx
1 to 2 Axis number
nn
Integer Positive software travel limit (encoder counts)
Example
1SL-8250 (set axis 1 negative travel limit to -8250 encoder counts)
1SR8190 (set axis 1 positive travel limit to 8190 encoder counts)
SM (save to non-volatile memory)
See Also
SL, SL?, SR?, SM