Rockwell Automation 57C422B 2 Axis Servo Module - Manual (Page 85)

PROGRAMMING 4-57
4.50.7 Cam Data Registers
Cam data is stored in registers 132-2046 for the X axis
and in registers 2180-4094 for the Y axis. The number of
usable points within this register range depends upon
whether you have selected time cam or position cam via
register 130, bit 8.
Time cam data is stored either as single precision integers
(16 bits, i.e., one register) or as bytes (8 bits). The largest
number of points that can be defined for a time cam is 1915 if
stored as registers, and 3830 if stored as bytes. See figure
4.57 for the first and last possible points that can be defined
for a time cam.
Position cam data is stored as double precision integers (32
bits, i.e., two registers), with the even number register being
the lower order 16 bits. The largest number of points that can
be defined for a position cam is 956. See figure 4.58 for the
first and last possible points that can be defined for a position
cam.
For both the time and position cam modes, the total number
of points that is defined must be specified in registers 128 for
the X axis and in register 2176 for the Y axis. The values in
the table must be in the proper format. See section 4.50 and
4.50.5 for more information.
Figure 4.56 – Cam Loop Back Register