Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual page 113

Limits of the interpolation control
Limits are provided on the interpolation control that can be implemented and speed ([Pr.20] Interpolation speed specification
method) that can be set, depending on the settings in [Pr.1] Unit setting of the reference axis and interpolation axis. (For
example, the circular interpolation control cannot be performed if the unit of the reference axis and that of the interpolation
axis differ.)
The following table shows the limits of the interpolation control and speed specification.
: Setting possible
: Setting not possible
: No interpolation axis
Interpolation control set in
[Da.2] Control method
1-axis linear control
1-axis fixed-feed control
Speed-position switching control
Position-speed switching control
2-axis linear interpolation control
2-axis fixed-feed control
1-axis speed control
2-axis speed control
2-axis circular interpolation control
*1 The units of mm and inch can be mixed.
*2 If "composite speed" is set using 2-axis speed control to start positioning, an interpolation mode error (error code: 199AH) will occur, and
positioning will not start.
*3 If "reference axis speed" is set using 2-axis circular interpolation control to start positioning, an interpolation mode error (error code:
199BH) will occur, and positioning will not start.
*4 If the units are different or if mm and inch are mixed, use the unit set to the reference axis for the unit of the speed being controlled.
*5 The unit of degree cannot be set. If circular interpolation control is set when the unit is "degree", circular interpolation (error code:
199FH) will occur, and positioning will not start. During the positioning control, the operation decelerates to stop at the detection of the
error.
Axis operation status during the interpolation control
During the interpolation control, "2: Interpolation" is stored in [Md.26] Axis operation status. If "0: Standby" is saved when
interpolation control finishes and an error occurs in the interpolation control, both the reference and interpolation axes will
decelerate and stop, and "-1: Error in progress" will be saved.
[Pr.20] Interpolation speed
specification method
Composite speed
Reference axis speed
Composite speed
Reference axis speed
Composite speed
Reference axis speed
*2
Composite speed
Reference axis speed
Composite speed
*3
Reference axis speed
*1
[Pr.1] Unit setting
The units of the reference axis
and interpolation axis are the
same, or the combination of mm
*4
and inch is used.








*5


9 MAJOR POSITIONING CONTROL
9.1 Overview of the Major Positioning Controls
The units of the reference axis
*4
and interpolation axis differ










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