Type Of Cam Data - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

Type of cam data

The cam data methods used in the cam function are linear cam, stroke ratio data format, coordinate data format, and auto-
generation data format. Cam data is arranged in the "Cam storage area" and "Cam open area".
Refer to memory operation of cam data for details of each area. (Page 89 Memory operation of cam data)
The following describes each type of cam data.
Linear cam control
When "0" is set for "[Pr.440] Cam No. (R: D42702+160n/Q: D15062+150n)", the cam data operates as a straight line with a
100% stroke ratio at the last point. Linear cam data does not consume the cam open area. Also, linear cam data cannot be
read/written as storage data.
Cam axis current
value per cycle
Current feed value
Cam reference
position
(At 1st cycle)
Stroke ratio data format
The stroke ratio data format is defined in equal divisions for one cam cycle based on the cam resolution, and configured with
stroke ratio data from points within the cam resolution.
Refer to create cam data for setting methods for cam data. (Page 89 Create Cam Data)
Setting item Setting details
Cam No. Set the cam No.
Cam resolution Set the number of divisions for one cam cycle.
Cam data starting Set the cam data point corresponding to "Cam axis current
point value per cycle = 0".
Stroke ratio data Set the stroke ratio from the 1st to the last point.
(The 0th point setting is not required. It is always 0%.)
*1 For setting the stroke ratio out of range ±100% with MT Developer2, check the "Display Advanced Cam Graph Stroke" by selecting the
[Cam Data] on the options screen displayed by the menu bar [Tools]  [Options].
Ex.
Cam resolution: 512
Stroke ratio[%] (Setting range: -214.7483648% to 214.7483647%)
100.0000000
(Cam reference position)
-100.0000000
At the 0th point
5 CAM FUNCTION
84
5.1 Control Details for Cam Function
Cam reference
position
(At 2nd cycle)
Cam axis length per cycle [Cam axis cycle units]
0
t
Cam reference
position
(At 3rd cycle)
t
Stroke amount×100%
Setting range
1 to 1024: User created cam
256/512/1024/2048/4096/8192/16384/32768
0 to (Cam resolution - 1)
-2147483648 to 2147483647
-7 *1
[×10 %]
(-214.7483648 to 214.7483647%)
At the 512th point
(At the last point)
Default value
(MT Developer2)
1
256
0
0