CIGAL Reference Manual, Chapter 4 (Variables): sw1
usage: sw1 = value ; switch number 1
or: sw2 = value ; switch number 2
or: sw3 = value ; switch number 3
SW1, SW2, and SW3 are device dependent number variables, designed to control relay switches connected via the printer port. This command is currently only available on the time-lapse microscope system at University College London.
The VALUE of the switches can be either:
0 -- switch OFF 1 -- switch ON