Prior Scientific ProScan III Manual page 44

ProScan® III Manual
I<cr> aborts the current move and empties the queue. This queueing facility is useful in
MACRO and SOAK modes, but normally the controlling application would sequence the
moves along with such other external operations as image acquisition.
The default convention is that the controller will move each stage device by 1µm per
number entered, in other words a requested move of 1000,0 will result in the stage
moving 1mm in the X axis. If desired this can be over-ridden by using the scale stage (SS)
command. The stage scale is determined by the model of stage in use. A stage with a 2mm
ball screw and a 200 step motor has an SS value of 25. See Appendix B for full explanation
of microsteping calculations. Changing SS value to 100 and requesting a move of 1000,0
will now result in the stage moving 4mm in the x axis.
The commands STAGE, FILTER, FOCUS and SHUTTER return a text description the last
line of which is always "END". This allows Prior to add supplementary text information
without resulting in changes to the users application code (assuming that the application
software reads all text up to "END".)
MACRO and SOAK - a set of commands can be entered and started in a block by the use
of the MACRO command.
Example of MACRO
If you wish to close a shutter, move the filter wheel to a new position then open the
shutter.
MACRO
8,A,1
7,1,4
8,A,0
WAIT 1000 R
MACRO 0 start the macro
SOAK - this is an extension to the MACRO command enabling the testing of a controller
without tying up a PC. The soak routine continually performs the instructions entered in a
loop, reporting the number of complete cycles on each pass. To stop the soak test enter
an action and the unit will complete the current cycle and then stop.
© Prior Scientific Instruments Ltd
0 enter macro mode
R close shutter A
R move to filter position 4
R open shutter A
wait 1000 msecs
Version 1.12 June 2017 Page 42