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3 CAM FUNCTION
3.1 Control Details for Cam Function
■Coordinate data format
The coordinate data format is defined in coordinates of more than 2 points for one cam cycle. The coordinate data is
represented as "(Input value, Output value)".
Input value: Cam axis position value per cycle
Output value: Stroke position from cam reference position
With this format, "[Pr.441] Cam stroke amount" of output axis parameter is ignored and output value of the coordinate data
becomes cam stroke position.
Refer to the following for setting methods for cam data.
Page 82 Create Cam Data
When an input value that is 0 or the cam axis length per cycle does not exist in the coordinate data, the coordinate is
calculated from the line segment between the nearest two coordinates.
Setting item Setting details Setting range Default value
(Engineering tool)
Cam data
operation function
Cam No. Set the cam No. 0: Linear cam
1 to 256: User created cam
1 [Cd.601]
Operation cam No.
Cam data format Set "2".
(Setting with the engineering tool is not
required.)
2: Coordinate data format 2 [Cd.604]
Cam data format
Coordinate number Set the number of coordinates to define the
cum curve for one cycle. The coordinates
at the 0th point are included.
2 to 16384 2 [Cd.605]
Cam resolution/
coordinate number
Cam data starting
point
Setting is not required with coordinate data
format.
[Cd.606]
Cam data starting point
Coordinate data Set all coordinate data (input value: X
n
,
output value: Y
n
).
Required to set the coordinate data (X
0
,
Y
0
) from the 0th point.
The input value should be larger than the
previous coordinate data (X
n
< X
n + 1
).
Input value:
0 to 2147483647
[Cam axis cycle units]
Output value:
-2147483648 to 2147483647
[Output axis position units]
0 [Cd.607]
Cam data value
(X
0
,Y
0
)
(X
1
,Y
1
)
(X
2
,Y
2
)
(X
3
,Y
3
)
(X
4
,Y
4
)
(X
5
,Y
5
)
(X
6
,Y
6
)
(X
7
,Y
7
)
(X
8
,Y
8
)
(X
9
,Y
9
)
(X
10
,Y
10
)
2147483647
-2147483648
0
Input value: X
Cam axis length per cycle [Cam axis cycle units]
(Cam reference
position)
Output value: Y
[Output axis position units]
(X
0
,Y
0
)
(X
1
,Y
1
)
(X
2
,Y
2
)
(X
3
,Y
3
)
(X
4
,Y
4
)
(X
5
,Y
5
)
(X
6
,Y
6
)
(X
7
,Y
7
)
(X
8
,Y
8
)
(X
9
,Y
9
)
(X
10
,Y
10
)
2147483647
-2147483648
0
Input value: X
Cam axis length per cycle [Cam axis cycle units]
(Cam reference
position)
Output value: Y
[Output axis position units]
Generated line
segment from
(X0, Y0) and (X1, Y1)
Generated line
segment from
(X9, Y9) and (X10, Y10)
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