Sets the X position of the prime focus autoguider probe. This command can also be used to stop or initialise the mechanism.
2=to: 2!:}Format: PGDX <value>
2=to:
2!:}Examples: PGDX 56700
PGDX INIT
2=to: 2!:}Units: Microns.
2=to: 2!:}Range: 0 to 110000.
2=to: 2!:}Comments: Instead of a value, the strings STOP and INIT can be given to this command to stop or initialise the mechanism.