Cam Auto-Generation Function - Mitsubishi Electric RD77MS2 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.
It is possible to generate up to 1 Mbyte including the regular cam data. (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)
Operation cycle Maximum number of
control axes
0.444 For 2 axes
0.888 For 4 axes
1.777 For 16 axes
Cam operation control data
Setting item Setting details
[Cd.608] • Set the request for cam auto-generation.
Cam auto-generation • The Simple Motion module resets the value to "0"
request automatically after completion of the cam auto-
generation.
Fetch cycle: Main cycle
[Cd.609] • Set the cam No. to be generated automatically.
Cam auto-generation Fetch cycle: At requesting cam auto-generation
cam No.
[Cd.610] • Set the type of cam auto-generation.
Cam auto-generation Fetch cycle: At requesting cam auto-generation
type
[Cd.611] • Set the parameters for each type of cam auto-
Cam auto-generation generation.
data Fetch cycle: At requesting cam auto-generation
*1 With the exception of positioning control, main cycle processing is executed during the next available time. It changes by status of axis
start.
[Cd.608] Cam auto-generation request
Set "1: Cam auto-generation request" to execute cam auto-generation.
Cam data is generated in the cam open area of the specified cam No. based on the cam auto-generation data.
The setting value is reset to "0" automatically after completing the process.
The cam auto-generation data is saved in the cam storage area. The cam auto-generation is executed automatically again
when the next power supply turns ON or PLC READY signal [Y0] OFF to ON.
If a warning occurs when requesting cam auto-generation, the warning number is stored in "[Md.24] Axis warning No." of axis
1, and the setting value is reset to "0" automatically.
When another request command is set, this function does not get executed and the setting value is reset to "0" automatically.
[Cd.609] Cam auto-generation cam No.
Set the cam No. to be generated automatically.
256
825 [s]
746 [s]
1379 [s]
*1
4096
10248 [s]
8929 [s]
12533 [s]
Setting value
■Set in decimal.
1: Cam auto-generation request
■Set in decimal.
1 to 256
■Set in decimal.
1: Cam for rotary cutter
(Page 60 [Cd.611] Cam auto-
generation data)
32768
75898 [s]
65950 [s]
95997 [s]
Default Buffer
value memory
address
0 53200
0 53201
0 53202
0 53204 to 53779
3 CAM FUNCTION
59
3.2 Create Cam Data
3