====== Command:SETLOW (SL) ======

--> MS2000 or RM2000 syntax ^

^Shortcut  |SL| 
^Format  |SETLOW [axis]=[position in mm]…|
^Units    |Millimeters|
^Remembered |Automatically |

<--

--> Tiger syntax ^

^Shortcut  |SL| 
^Format  |SETLOW [axis]=[position in mm]…|
^Units    |Millimeters|
^Type    |Axis-Specific  |
^Remembered |Automatically |

<--

This command sets/displays the lower firmware limit for an axis.  The limit is considered a fixed hardware locations and are adjusted properly when the controller’s coordinate system is altered with the ''HERE'' or ''ZERO'' commands.  The limit positions are automatically remembered and recalled through a power cycle and do not need to be saved using the [[commands:saveset|SAVESET command]].  

''SL [axis]+'' will set the lower limit to be the current position.  Restore the default limit by executing ''SL [axis]-''.  The +/- operand syntax is supported as of Tiger firmware v2.8 and MS-2000 firmware as of roughly 2013.

The corresponding command for the lower firmware limit switch is the [[commands:setlow|SETLOW]] command.

== Reply ==

If there are no errors, a positive reply of  <wrap reply> :A </wrap>  followed by the startup sequence.
For the Z axis only, input values equal to or greater than the current ''SETUP'' parameter value are acknowledged by <wrap reply> :A </wrap>  but ignored.

== Example ==

<asi> $ SL X=-50 Y=-50 Z?
:A Z=-110.000</asi>

In the above example, the lower limit for the X and Y axes have been set to 50 millimeters from the origin in the negative direction.  Note that the Z? resulted in the controller returning the current position of the Z lower firmware limit switch.


**Note 1:**	If this value is equal to or greater than the value for SETUP, then the controller will operate incorrectly.  See also Note 2. \\
**Note 2:**	When the direction of an axis is negative (see[[commands:customa| CCA Z=###]]), upper limit settings must be negative values, and lower limit settings must be positive values. \\
**Note 3:**	For clocked devices (e.g. filter sliders, turrets) the lower limit is always 1. \\


{{tag>commands tiger ms2000}}