Omron CS1W-MC221 -, Operation Manual

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Overview of Version 1 Upgrades Section 1-12
1-12-1-3 Electronic Cam Function (CAMBOX)
Overview
This function moves an operating axis in sync with the specified input axis
according to a cam table (i.e., a table that sets the relationship between input
axis positions and the operating axis positions). The operation is similar to
that of the cam mechanism of a machine.
For the input axis, a sync encoder input, MPG input, encoder feedback input
(X, Y, Z, or U), virtual axis present position, or real axis position command
value (X, Y, Z, or U) can be specified.
The cam table can be used for either reciprocating cam operation (with the
same stroke ratio for 0
°
and 360
°
) or feed cam operation (with different stroke
ratios for 0
°
and 360
°
).
It is possible to integrate other axes (i.e., other than the input axis and operat-
ing axis) to the axis that is being operated by the cam table. This enables
position compensation according to other axis positions.
Block Diagrams
Oper
ating axis
Input axis
•
Virtual axis present
position
•
Real axis position
command value
•
Real axis encoder
feedback input
•
MPG or sync encoder
input
Input axis
Operating axis
•
Feed axis
•
Cutter position,
etc.
Input axis
Integrated axis
Operating axis
Input axis
Integra-
tion
process-
ing
Operating axis
Note: The input axis, operating axis, and integrated axis must all be different axes.
Sync Encoder Input Encoder Input
MC Unit MC Unit
Error
counter
Electronic
cam
Electronic
cam
D/A
converter
Sync encoder
Speed
references
Driver
Motor
G-language program
Error
counter
D/A
converter
Position
commands
Speed
references
Driver
Motor
Encoder
feedback
Position
commands
Error
counter
D/A
converter
Speed
references
Driver
Motor
Position
commands