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Command:ARRAY (AR)

MS2000 or RM2000 syntax
Shortcut AR
Format AR [X=N_fast] [Y=N_slow] [Z=Δ_fast] [F=Δ_slow] [T=θ]
Units X and Y in integer, Z and F in mm, θ tilt degrees from X axis
Required Firmware Module ARRAY
Remembered Using SS Z
Tiger syntax
Shortcut AR
Format [addr#]AR [X=N_fast] [Y=N_slow] [Z=Δ_fast] [F=Δ_slow] [T=θ]
Units X and Y in integer, Z and F in mm, θ tilt degrees from X axis
Type Card-Addressed
Required Firmware Module ARRAY
Remembered Using [addr#]SS Z

The ARRAY command specifies the grid size and interval for the array module. Briefly, this sets up a grid of points that can be traversed automatically with simple TTL control or with the RBMODE or AIJ commands.

The size of the array is N_fast by N_slow points, with points spaced apart distance Δ_fast and Δ_slow (expressed in millimeters). By default X is the fast axis (where most movements occur) and Y is the slow axis (with periodic movements), but this can be interchanged using the SCAN command (e.g. SN Y=1 Z=0 will make the fast axis the 2nd axis on the card, the Y axis usually, and the slow axis being the 1st axis usually X).

The location of the first point in the array is set with the AHOME command.

The array pattern can be rotated using the T parameter where the value is specified angle in degrees. When the value is non-zero then both X and Y motors will move between each grid point; e.g. if set to 45 degrees then the X and Y motors will move by the same amount.

Without arguments, the AR command starts self-scanning of the array. When the stage arrives on target, it will delay for a period of time set by the command RT Z=time_delay before continuing on to the next position. It is possible to repeat the array using the RM F byte.

Whether a raster or serpentine pattern is used is set using the SCAN F setting (default is serpentine).

If you start the array scan with the AR command (no arguments), it will use an internal timer that moves to the next position independently of TTL-input triggered moves. If you are driving the array scan with TTL X=7, then you should use the RM command (no arguments) to simulate a TTL input and start the array scan. This will avoid using the internal timer.

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commands/array.txt · Last modified: 2024/04/05 06:54 by jon