3 MAJOR POSITIONING CONTROL
3.1 Outline of Major Positioning Controls
67
3
Limits to interpolation control
There are limits to the interpolation control that can be executed and speed ([Pr.20] Interpolation speed designation method)
that can be set, depending on the "[Pr.1] Unit setting" of the reference axis and interpolation axis. (For example, circular
interpolation control cannot be executed if the reference axis and interpolation axis units differ.)
The following table shows the interpolation control and speed designation limits.
: Setting possible,
: Setting not possible.
*1
"mm" and "inch" unit mix possible.
When "mm" and "inch" are mixed, convert as follows for the positioning.
If interpolation control units are "mm", positioning is controlled by calculating position commands from the address, travel value,
positioning speed and electronic gear, which have been converted to "mm" using the formula: inch setting value
25.4 = mm setting
value.
If interpolation control units are "inch", positioning is controlled by calculating position commands from the address, travel value,
positioning speed and electronic gear, which have been converted to "inch" using the formula: mm setting value/25.4 = inch setting
value.
*2
"degree" setting not possible.
The error "Circular interpolation not possible" (error code: 199FH) will occur and the positioning control does not start if circular
interpolation control and 3-axis helical interpolation control is set when the unit is "degree".
The machine will carry out a deceleration stop if "degree" is set during positioning control.
*3
The unit set in the reference axis will be used for the speed unit during control if the units differ or if "mm" and "inch" are combined.
*4
Only linear interpolation axis can use a unit different from that of the reference axis.
Axis operation status during interpolation control
"Interpolation" will be stored in the "[Md.26] Axis operation status" during interpolation control. "Standby" will be stored when
the interpolation operation is terminated. Both the reference axis and interpolation axis will carry out a deceleration stop if an
error occurs during control, and "Error" will be stored in the operation status.
Interpolation control set in
"[Da.2] Control method"
[Pr.20] Interpolation speed
designation method
[Pr.1] Unit setting
Reference axis and
interpolation axis units are the
same, or a combination of
"mm" and "inch".
Reference axis and
interpolation axis units differ
Linear 2 (ABS, INC)
Fixed-feed 2
Composite speed
Reference axis speed
Circular sub (ABS, INC)
Circular right (ABS, INC)
Circular left (ABS, INC)
Composite speed
Reference axis speed
Linear 3 (ABS, INC)
Fixed-feed 3
Composite speed
Reference axis speed
Linear 4 (ABS, INC)
Fixed-feed 4
Composite speed
Reference axis speed
Helical sub (ABS, INC)
Helical right (ABS, INC)
Helical left (ABS, INC)
Composite speed
Reference axis speed
Содержание RD77MS16
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Страница 316: ...314 9 COMMON FUNCTIONS 9 4 External Input Signal Select Function Program example ...
Страница 317: ...9 COMMON FUNCTIONS 9 4 External Input Signal Select Function 315 9 ...
Страница 574: ...572 13 PROGRAMMING 13 4 Positioning Program Examples Parameter initialization program Flash ROM write program ...
Страница 575: ...13 PROGRAMMING 13 4 Positioning Program Examples 573 13 Error reset program Axis stop program ...
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