XCDX458000-00 rev A
20
Specifications
The function can be activated using either the XMS command
ppi
or Host
command
P
OSITION
P
ULSE
I
NCREMENTAL
(33)
. Three parameters are
specified in the command:
• start - when the start position is reached the Controller generates the
first pulse.
• increment - specifies the pulse timing in mm; the next position for
compare is set as previous position plus increment. The increment is
rounded to integer number of encoder pulses.
• count - specifies the number of pulses. If count is set to one a single
pulse is produced at the start point.
2.1.7.2
C
OORDINATED
MOVES
The XCDX can coordinate moves between the X and Y axes when operating
in Raster mode.
To minimize turnaround time, the secondary axis must start motion as soon as
possible after completing last trigger position in the primary axis.
2.1.8
E
MERGENCY
S
TOP
(EMO)
The user can use the EMO to stop stage operation. Refer to
2.1.9
J
OYSTICK
The XCDX can be controlled by a 3 axis 2 button joystick when configured for
3 axis operation. The default setting at power up is joystick. The XCDX SW
can lockout the joystick if desired. The joystick interface connector is a mini
DIN 8 pin.
The joystick is calibrated to its middle position at beginning of operation
For a detailed explanation of the Position Compare (
ppi
) refer to the XCD-
HR Firmware user manual, XCD0458002-00