Specifications

15
Command
Return
CPAn
1
n
2
n
3
! (for every step made) F (when motion is complete)
Function:
The new position angle is entered as nnn for any integer value from 000 to 359. Note that
left justified zeros are necessary for the entry. For example: to move to 10 degrees PA,
enter CPA010.
Trouble Shooting:
An error code 3 is returned if the position angle entered is over 359. If the entered
position angle is equal to the current, and error code 2 is returned.
Table 4-6. Command to rotate to a new position angle.
Command
Return
CSLEEP
(no return characters)
Function:
This command turns off power to the stepper motor. During the sleep state, the red LED
on the Pyxis will flash slowly. All operating parameters are kept in memory and are
available when the Pyxis is awakened. Once in SLEEP, the control program will ignore all
commands except the CWAKUP command.
Trouble Shooting:
With power off to the motor, the unit can be rotated by hand if enough torque is exerted to
overcome the static friction. The current position angle can be lost if the camera is not
properly balanced around the optical axis. Homing the Pyxis will return the unit to a
known position angle.
Table 4-7. Command to power down the stepper motor.
Command
Return
CWAKUP
“!” CR LF
Function:
This command powers on the stepper motor and returns the Pyxis operating program to
the serial loop. This command is only recognized when the Pyxis is in the SLEEP mode.
Table 4-8. Command to wake up the Pyxis.