Mitsubishi Electric Q173DSCPU Programming Manual page 138

6 CAM FUNCTION
Operation method
Create with
MT Developer2
Create in cam storage area
with Motion SFC program
Create in cam open area with
Motion SFC program
Create with cam auto-
generation in Motion SFC
program
(1) Cam data operation with MT Developer2
Cam data can be modified while viewing the waveform with MT Developer2.
The cam data is written/read/verified to the cam storage area with
MT Developer2, however it cannot be executed to the cam open area.
The waveform generated by the cam auto-generation function can be confirmed
on the "Cam graph" of the "Cam data window" through reading with
MT Developer2.
(2) Cam data operation with Motion SFC program
Cam data read/write operation, cam auto-generation and cam position
calculation can be executed with the Motion SFC program. (Refer to Section
6.2.2)
(3) Cam data capacity
The size of the created cam data is shown below for the cam storage area/cam
open area.
Data method/
Auto-generation type
Stroke ratio data format
Coordinate data format
Stroke ratio data format
Coordinate data format
Stroke ratio data format
Coordinate data format
For a rotary cutter
When writing with the Motion SFC program or when the cam auto-generation
function is executed, the writing area free capacity size may decrease since the
size changes depending on the cam resolution change, etc. In this case, write
the cam data with MT Developer2 or delete them once.
(4) Delete method of cam data
Write the empty data in the cam storage area with MT Developer2 to delete only
cam data.
(5) Password protection for cam data
The cam data can be protected as shown below by password setting.
Registration condition
Cam data cannot be written without
Write protection
unlocking the password.
Cam data cannot be read/written
Read/write protection
without unlocking the password.
Refer to the "Q173D(S)CPU/Q172D(S)CPU Motion controller Programming
Manual (COMMON)" for details of the password protection.
Cam storage area
(262144 bytes)
Cam resolution
Coordinate number
Cam resolution
Coordinate number
0 byte
36 bytes
Cam data operation with
MT Developer2
6 - 9
Cam open area
(1048576 bytes)
4 bytes Cam resolution
8 bytes Coordinate number
4 bytes Cam resolution
8 bytes Coordinate number
Cam resolution
Coordinate number
Cam resolution
Cam data operation with
Motion SFC program
Writing cam data and cam data auto-
generation is not operated.
Reading/writing cam data and
generating cam data auto-generation is
not operated.
4 bytes
8 bytes
4 bytes
8 bytes
4 bytes
8 bytes
4 bytes