Omron CS1W-MC221 - 02-2008 Operation Manual page 91

Overview of Version 1 Upgrades
1-12-1-3 Electronic Cam Function (CAMBOX)
Overview
Block Diagrams
Sync Encoder Input
MC Unit
Sync encoder
64
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.
Input axis
Virtual axis present
position
Real axis position
command value
Real axis encoder
feedback input
MPG or sync encoder
input
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.
Input axis
Integrated axis
Note: The input axis, operating axis, and integrated axis must all be different axes.
Electronic
cam
Position
commands
Error
counter
D/A
converter
Speed
references
Driver
Motor
Input axis
Integra-
Input axis
tion
process-
ing
Encoder Input
MC Unit
G-language program
Position
commands
Error
counter
D/A
converter
Speed
Speed
references
references
Driver
Driver
Encoder
feedback
Motor
Section 1-12
Operating axis
Feed axis
Cutter position,
etc.
Operating axis
Electronic
cam
Position
commands
Error
counter
D/A
converter
Motor