Sets which axes are to be used for 2D raster scan. The same axis settings also apply to the ARRAY module. The fast-scanned raster axis (horizontal) is defined by scan_axis = 1; the slow-scanned axis (vertical) is defined by scan_axis = 2. Single axis scans (1D) requires setting the unused axes scan_axis = 0, and the driven axis as scan_axis = 1. Note: this is different from the Tiger usage of pseudoaxes X/Y/Z.

To set multiple axes in the SCAN command, you will need to set all of the axes to 0 first.

No Arguments: The command SCAN initiates (or stops) a scan using parameters set with the SCANR and SCANV commands.

X: [scan_axis_x] Set or query the scan axis for the X axis.

Y: [scan_axis_y] Set or query the scan axis for the Y axis.

Z: [scan_axis_z] Set or query the scan axis for the Z axis.

F: [pattern] The scan pattern may be set to 0 for RASTER scans or 1 for SERPENTINE scans. This setting defaults to RASTER for firmware with the SCAN MODULE included and SERPENTINE for firmware with the ARRAY MODULE included. When the number of lines (SCANV Z) is set to the default of 1 then the behavior is the same for both raster and serpentine scans.

SCAN X? Y? Z?
:A X=Horz Y=Vert Z=None 
SCAN X=0 Y=0 Z=0		
:A
SCAN X=2 Y=1 Z=0
:A
SCAN X? Y? Z?
:A X=Vert Y=Horz Z=None 

Note multiple small changes in usage from MS-2000 command set.

No Arguments: The command SCAN initiates (or stops) a scan using parameters set with the SCANR and SCANV commands.

X: [scan_state] Specifying an argument for the pseudoaxis X in decimal sets the state directly (see table below; the value is simply the decimal representation of the corresponding state character). Note that the firmware expects only certain states to be set by the user (marked as “OK to set” in the table); setting to a different state may yield unpredictable results. Querying the pseudoaxis X value returns the character associated with the current state.

Y/Z: [axis_id] Specify the cards axis ID as the fast_axis_id or slow_axis_id (axis IDs are obtainable using Z2B query; they are 0 and 1 for X and Y axes respectively on a two-axis motor card). If slow_axis_id is set to 9 then a true single-axis scan will be executed (not even anti-backlash moves on the slow axis); if slow_axis_id is specified but the slow axis start and stop positions (NV X and NV Y) are equal then a single-axis scan will execute but the slow axis position will be checked at the scan turnaround points. Note: this is different from the MS-2000 usage of pseudoaxes X/Y/Z.

F: [pattern] The scan pattern may be set to 0 for RASTER scans or 1 for SERPENTINE scans.

No Arguments: Starts or arms the SPIM state machine or terminates it if running or armed (starts state machine execution for Micro-mirror, puts in arm state for piezo). By so doing, any active single-axis functions will be stopped and the SPIM positions/steps will be calculated according to the active parameters (e.g. SAA, SAO, NR, NV, RT).

X: [state] Specifying an argument for the pseudo-axis X in decimal sets the state directly (see table below; the value is simply the decimal representation of the corresponding state character). Note that the firmware expects only certain states to be set by the user (marked as “OK to set” in the table); setting to a different state may yield unpredictable results. Querying the pseudo-axis X value returns the character associated with the current state.

Note: Other undocumented states may be used during SPIM state machine execution.