Specifications

16
Command
Return
CXxxn
1
n
2
“!”
Function:
This command will rotate the Pyxis in the direction specified by n
1
by n
2
number of steps.
n
2
can be any value from 1 to 9 and n
1
can be either a 0 or a 1. Position angle information
is not updated when this command is used
Trouble Shooting:
If this command is used, the value for the current position angle will be in error. The Pyxis
will have to be homed in order for the position angle to be found again.
Table 4-9. Command to rotate by small steps.
Command
Return
CTxxn
1
n
2
“!”
Function:
This command controls the rotational rate of the Pyxis. The value of n
1
n
2
can be any
integer value from 00 to 99 with 08 being the default rate. This value is used as a delay
parameter in milliseconds within the stepper motor control routine.
Trouble Shooting:
If a large value is entered, the Pyxis may take a very long time to complete a position angle
change or home itself. It would be necessary to wait before entering a new value.
Table 4-10. Command to change the rotational rate.
Command
Return
CZnxxx
(no return characters)
Function:
This command selects either full step or ½ step rates for the Pyxis. The value of n can be
either 0 for full step or 1 for ½ step. The default value is 0. The advantage of ½ step rate
is less vibration at the expense of speed.
Trouble Shooting:
The ½ step rate will slow the stepper rotation rate by ½ for the same delay value selected
with the CT command. This command is only available for firmware 1.10 and above
Table 4-11. Command to change the step mode.