Mitsubishi Electric Q172DSCPU, Programming Manual

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6 CAM FUNCTION
6.2.2 Cam data operation by Motion SFC program
Cam data read/write operation and cam auto-generation can be executed with the
synchronous control dedicated function of Motion SFC program.
Refer to the "Q173D(S)CPU/Q172D(S)CPU Motion controller (SV13/SV22)
Programming Manual (Motion SFC)" for details.
Classification Symbol Instruction Description
CAMRD Cam data read
This is used to read cam data.
The upper amount of data for each operation is
4096 points (2 words are used per point.) with the
stroke ratio data format, and 2048 points (4 words
are used per point.) with the coordinate data format.
If the read is not completed in one time, the
operation should be separated in multiple times.
CAMWR Cam data write
This is used to write cam data.
The upper amount of data for each operation is
4096 points (2 words are used per point.) with the
stroke ratio data format, and 2048 points (4 words
are used per point.) with the coordinate data format.
If the write is not completed in one time, the
operation should be separated in multiple times.
CAMWR2
Cam data write
(Cam open area)
This is used to write cam data to cam open area.
The upper amount of data for each operation is
4096 points (2 words are used per point.) with the
stroke ratio data format, and 2048 points (4 words
are used per point.) with the coordinate data format.
f the write is not completed in one time, the
operation should be separated in multiple times.
Synchronous
control dedicated
function
CAMMK
Cam auto-generation
function
This function is used to automatically generate cam
data for specific purposes by setting data for auto-
generation.
Data for auto-generation is stored in the cam
storage area, and the cam data generated by the
cam auto-generation function is generated in the
cam open area.
It is possible to generate up to 1Mbyte including the
regular cam data.
(Example): 256 cam data (with the stroke ratio
format, resolution is 1024) can be
automatically generated.