Cam Data Operation Function - Mitsubishi Electric MELSEC iQ-R RD78G4 User Manual

Cam data operation function

This function is used to write/read cam data via buffer memory with the cam operation control data. To operate the points
more than the amount of data for each operation (as follows), the operation should be executed separately.
Cam data format
Stroke ratio data format
Coordinate data format
Cam operation control data
Setting item Setting details
[Cd.600] • Set the command for operating cam data.
Cam data operation • After completion of cam data operation, "0" is
request automatically stored by the Motion module.
Fetch cycle: Main cycle
[Cd.601] • Set the operating cam No.
Operation cam No. Fetch cycle: At request (Cam data operation request)
[Cd.602] • Set the first position for the operating cam data.
Cam data first Fetch cycle: At request (Cam data operation request)
position
[Cd.603] • Set the number of operating cam data points.
Number of cam data Fetch cycle: At request (Cam data operation request)
operation points
[Cd.604] • Write operation: Set cam data format.
Cam data format Fetch cycle: At request (Cam data operation request)
• Read operation: The cam data format is stored.
Refresh cycle: At completion of the condition
(Completion of cam data operation)
[Cd.605] • Write operation: Set the cam resolution/the coordinate
Cam resolution/ number.
coordinate number Fetch cycle: At request (Cam data operation request)
• Read operation: The cam resolution/the coordinate
number is stored.
Refresh cycle: At completion of the condition
(Completion of cam data operation)
[Cd.606] • Write operation: Set the cam data starting point.
Cam data starting Fetch cycle: At request (Cam data operation request)
point • Read operation: The cam data starting point is stored.
Refresh cycle: At completion of the condition
(Completion of cam data operation)
• Setting is not required with coordinate data format.
[Cd.607] • Write operation: Set the cam data corresponding to the
Cam data value cam data format.
Fetch cycle: At request (Cam data operation request)
• Read operation: The cam data is stored.
Refresh cycle: At completion of the condition
(Completion of cam data operation)
*1 With the exception of positioning control, main cycle processing is executed during the next available time. It changes by status of axis
start.
*2 Cam axis cycle units (Page 123 Units for the output axis)
*3 Cam axis cycle units (Page 123 Units for the output axis)
Amount of data for each operation
4096
2048
Setting value
(Read operation: Stored value)
■Set in decimal.
1: Read (Cam open area)
2: Write (Cam storage area)
*1
3: Write (Cam open area)
■Set in decimal.
1 to 256
■Set in decimal.
■Set in decimal.
■Set in decimal.
1: Stroke ratio data format
2: Coordinate data format
■Set in decimal.
■Set in decimal.
■Set in decimal.
-2147483648 to 2147483647[  10
Input value: 0 to 2147483647
[Cam axis cycle units
Output value: -2147483648 to
2147483647
[Output axis position units
• Stroke ratio data format: 1 to cam
resolution
• Coordinate data format: 0 to
(coordinate number -1)
• Stroke ratio data format: 1 to 4096
• Coordinate data format: 1 to 2048
• Stroke ratio data format: 256/512/
1024/2048/4096/8192/16384/32768
• Coordinate data format: 2 to 16384
• Stroke ratio data format: 0 to (Cam
resolution - 1)
• Coordinate data format: Setting not
required
• Stroke ratio data format
-7
%]
• Coordinate data format
*2
]
*3
]
Default Buffer memory
value address
0 45000
0 45001
0 45002
0 45003
0 45004
0 45005
0 45006
0 45008 to 53199
3 CAM FUNCTION
85
3.2 Create Cam Data
3