Omron CS1W-MC221 -, Operation Manual

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Programming Examples Section 8-1
N026 G70 N008
N027 G79
Explanation Block N000 declares the program number and axis being used.
*001 to *007
Comments.
N008 and N009
Waits until optional input zero turns ON. When the input turns ON, uncondi-
tional jump N009 is disabled and the next block is executed (*010).
*010 to *012
Comments.
N013
Substitutes the X-axis position into A0100.
N014 to N017
Determines whether to perform positioning in the clockwise or counterclock-
wise direction based on the target position (A0000) and the present position
(A0100), and then jumps to individual processes.
N018 and N019
Corrects to a target position within one revolution if a target position of more
than one revolution is specified, and restarts positioning from N014.
N020 to N024
Turns the turntable clockwise or counterclockwise and calculates target posi-
tion A0001 where the turntable will be positioned.
N025
Positions the turntable at the target position and then outputs M code 0001
and turns ON the M strobe, and then waits for M code reset from the CPU
Unit.
N026
After the M code reset from the CPU Unit has turned ON and OFF, jumps to
the process for waiting for optional input zero to turn ON.
System Parameter
Settings The following system parameter settings must be made.
• Minimum setting unit Set for the user’s system.
• Axis mode Set to Unlimited Feed Mode.
• Software limits Set between 0
°
and 360
°
. If the minimum setting
unit is 0.1, then the present position will be
updated between 0.0
°
and 359.9
°
.
Note In the above application, set the encoder resolution and pulse rate so that a
revolution (360
°
) is an integer when it is converted to pulses.
If positioning that passes though 0
°
, such as passing through 0
°
to shift the
position from 350
°
to 10
°
or passing through 0
°
to shift the position from 10
°
to
350
°
, is performed repeatedly in a system that generates a remainder when a
revolution (360
°
) is converted to pulses, an error of less than one pulse will
occur per revolution.
Work within the allowable range for accuracy and execute ORIGIN SEARCH
for each operation in systems like that described above.