Add On Trigger Board Commands - Prior Scientific ProScan III Manual

ProScan® III Manual
4.14 Add-on Trigger Board Commands
These commands are only available if the trigger board is fitted.
Command Arguments
TRIGGERRES [X|Y|Z]
TRIGGER F,D,A,N,P,W
TRIGGER none
© Prior Scientific Instruments Ltd
Response Description
Reports n, the number of encoder counts/ micron for the
n
axis. Axis may be X,Y or Z
F = First trigger position in encoder counts
D= Distance between triggers in encoder counts
A = Axis to trigger from X, Y or Z
N = Number of triggers in chord
P = trigger pulse polarity 'P' or 'N'
W = trigger pulse in microseconds
(ENSURE IT IS IN MICROSECONDS – 1 millionth
of a second- not milliseconds ).
Example:
A single chord in X with first trigger at 0, followed by 19
triggers every +100 counts, -ve trigger pulse of 1 ms
(millisecond).
Step 1: Position the stage before the first intended trigger
0 point.
E,n Step 2: Send 'TRIGGER 0,100,X,20,N,1000'to arm trigger
mechanism.
Step 3: Move stage over intended triggers (any command or
even joystick movement). The triggers will output when X =
0, 100, 200....1800, 1900 encoder counts. The trigger
mechanism is automatically disarmed after all specified
triggers have been output.
Negating the sign of D can be used to trigger in reverse
direction.
The user application should convert local stage position to
encoder counts when using the TRIGGER function. By
default the PS3 XY position is reported in microns, the Z
position is 100nm steps.
In COMP,0 mode an E,n response indicates error. See Error
Codes.
Report current trigger settings
F,D,A,N,P,W
Version 1.12 June 2017 Page 64