Cam Auto-Generation Function - Mitsubishi Electric MELSEC iQ-R RD78G4 User Manual

Cam auto-generation function

The cam auto-generation function is used to generate cam data automatically for specific purposes based on parameter
settings.
With this function, cam data is generated in the cam open area.
Up to 1 Mbyte data including the normal cam data can be generated. (Example: 256 cam data (with the stroke ratio format,
resolution is 1024) can be automatically generated.)
The processing time of cam auto-generation takes longer if the data point is larger. Also, the real processing time changes by
status of axis start etc.
(Reference) Relationship between the cam resolution and processing time in the cam auto-generation (Stroke ratio data
format)
• When "[Cd.608] Cam auto-generation request" is set to "1: Cam auto-generation request (with writing to the storage area)"
Maximum Operation
number of cycle[ms]
control axes
2 0.25
2 0.50
4 0.25
4 1.00
8 0.50
16 1.00
16 2.00
*1 For 4 axes with an operation cycle of 0.25[ms], the operation cycle may be exceeded if the cam auto-generation is performed during
synchronous control. The above table shows the result values when the operation cycle is exceeded.
• When "[Cd.608] Cam auto-generation request" is set to "2: Cam auto-generation request (without writing to the storage
area)"
Maximum Operation
number of cycle[ms]
control axes
2 0.25
2 0.50
4 0.25
4 1.00
8 0.50
16 1.00
16 2.00
*1 For 4 axes with an operation cycle of 0.25[ms], the operation cycle may be exceeded if the cam auto-generation is performed during
synchronous control. The above table shows the result values when the operation cycle is exceeded.
3 CAM FUNCTION
88
3.2 Create Cam Data
Cam resolution
256
3894299[s]
2889707[s]
*1
9398086[s]
2699020[s]
5500506[s]
5298250[s]
2992939[s]
Cam resolution
256
481[s]
80[s]
*1
1001[s]
81[s]
490[s]
81[s]
81[s]
4096
3600287[s]
2987577[s]
*1
7706081[s]
2695794[s]
6594591[s]
4803019[s]
3595699[s]
4096
2686[s]
1406[s]
*1
11474[s]
1159[s]
5054[s]
4045[s]
1621[s]
32768
4411035[s]
2810317[s]
*1
7880088[s]
2797026[s]
6623158[s]
5325880[s]
3203206[s]
32768
20274[s]
10803[s]
*1
86978[s]
9697[s]
37039[s]
26203[s]
11741[s]