9 Electronic Cam
DVP-20PM Application Manual
9-29
Parameter Data Format Explanation
P12
Number of data
points in sync area
Integer
When b[2] of P1 is 1, the parameter sets the number of data
points in sync area.
For detailed explanation of creating thick material cutting electronic cam curves, please refer to 9.4.2.4.
CR#10001: Reading electronic cam status
[Description]
The function is used to read current electronic cam status when electronic cam is executing. Only
DFROM instruction is applicable for this function. The read data will be as shown below.
Parameter Data Format Explanation
P1
Current position of
Master
Integer Reset at DOG signal
P2 Length of Master 1 Integer
DOG signal to DOG signal
Single cam: Length of the master axis after the
triggering of DOG
P3
Current electronic cam
curve
Integer
P4
Current position of
Slave
Integer
Updated at DOG signal
Single cam: Present length of the master axis after the
triggering of DOG
P5 Error of Slave Integer
Error between DOG signal and the end point of CAM
cycle.
P6
Current position of
Master
Integer START0/PG0 signal to START0/PG0 signal
P7 Error of Master Integer
Error between START0, PG0 signal and the end point of
CAM cycle
The function of reading electronic cam status can be applied in offset compensation to Slave error. For
the methods of Slave error compensation, please refer to 9.4.2.5.
CR#10002: Electronic cam chart real-time change
[Description]
There are 3 built-in electronic cam charts in PMSoft: Electronic cam chart-0~electronic cam chart-2. If
users need to conduct real-time change of electronic cam chart during program execution, set up this
register to designate the electronic cam chart to be enabled in the next cycle. Care should be taken on
the number of electronic cam charts, which should be as least 2 sets available for the change. The
instruction below is the application example. Set D0=K10002 before the electronic cam chart real time
change. When X0=ON, set value (0, 1, 2) in D100 indicating the cam chart to be selected (electronic
cam chart-0~electronic cam chart-2) will be written into DVP-20PM.
X0
DTO K100 D0 D100 K1
CR#10003: Smooth curve interpolation
[Description]
When the original data points are not sufficient for a smoother operation, users can apply Smooth
Curve Interpolation. The detailed content of smooth curve interpolation will be explained in 9.4.2.2.
Parameters for setting up the function are listed as below.
Parameter Data Format Explanation
P1 Maximum length of Master Integer
Original data points Integer
P2
Total points to be inserted Integer
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