10.10 Continuous Pass Operation - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U

10.10 Continuous Pass Operation

Continuously executing interpolation operation (linear interpolation, circular interpolation) results in a
continuous pass operation.
1. Operations valid for continuous pass operation
• Operations that result in continuous pass
operation
- Linear interpolation
- Circular interpolation
Note
• The number of continuous passes is not limited.
• Continuous pass operation continues if interpolation operations include the following:
- No processing
- Jump
• Continuous pass operation is not executed if the program contains the following types of instructed
interpolation operation:
- When after mode m code is set
- When the travel time of the operation is 50 ms or less
- When the travel time of the operation is "interpolation time constant × 2" or less
- When the preparation for the next operation (information pre-reading) is not in time
2. Content of continuous pass operation
• Consecutive interpolation instructions do not stop, and inflection points become smooth curves.
The radius of curvature varies depending on the interpolation time constant.
A larger interpolation time constant makes a larger radius of curvature.
• To draw a precise locus, apply circular interpolation operations.
• When the speeds between each interpolation operation differ, the velocity becomes a composite speed
with the one at the next step.
Y-axis Inflection point
Curve
Interpolation time constant
Speed
10.10 Continuous Pass Operation
• Operations that do not result in continuous pass
operation
- Variable speed operation
- Manual pulse generator
- JOG operation
- 1-speed positioning operation
- Interrupt 1-speed constant quantity feed
- 2-speed positioning operation
- Interrupt 2-speed constant quantity feed
- Interrupt stop
- Multi-speed operation
- Linear interpolation (interrupt stop)
- Mechanical zero return
- Dwell
- End
X-axis
When this period becomes lager,
the radius of curvature becomes larger.
Time
10 Table Operation
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