Delta DVP-20PM

9 Electronic Cam
 Example 3
【Function】
In multi-cutter application, such as rotary cut with 3 cutters, the pulses per round of Slave can not
be evenly distributed to each cutter and the error of Slave will increase as the execution times
increase. In this case, the cam data of each cutter should be designed respectively and the sum of
the data length of 3 cutters should equal to total pulses per round.
To meet this requirement, users only need to design the data setting of the first electronic cam once
and set up the associated register for borrowing the data setting from the previous electronic cam
curve. By this function, the 3 cam curves can be well connected and the pulses per round of Slave
can be fulfilled.
The setting of parameters is shown below.
Parameter
Setting value of the
first rotary cut curve
Setting value of the
second rotary cut curve
Setting value of the
third rotary cut curve
Length of Master
1000 1000 1000
Length of Slave
333 333 334
Length of sync area
200 200 200
Magnification ratio
1.0 1.0 1.0
Max magnification ratio
10.0 10.0 10.0
Acceleration curve
0 0 0
Cam curve
0 0 0
Cam curve setting
Only single data
real-time modification
is applicable
Borrow the previous
electronic cam data setting
Borrow the previous
electronic cam data
setting
Result
0 0 0
【Steps】
1. Open a CAM Chart window in PMSoft, and then type 900 in the Resolution box.
2. Download the program created to a DVP-20PM series motion controller, and then execute the
program.
3. Set M100 to write the parameters into D100~D112 and K10000 into D0. Write the data in
D100~D112 into special register CR#10000 to generate the first rotary cut curve.
4. Set M101 to change the data in D111. Write the new data into CR#10000 in the special register
K100 to generate the second rotary cut curve.
5. Set M102 to change the data in D102 and D111. Write the new data into CR#10000 in the
special register K100 to generate the third rotary cut curve.
6. Stop the DVP-20PM series motion controller, and then upload the program in the AH500 series
motion control module.
7. View the first curve in the CAM Chart-0 window. The curve is an electronic cam curve which is
created automatically.
DVP-20PM Application Manual
9-40