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Command Details
Section 6-3
• In radius specification, if [Radius] is positive, the center angle will be 180
degrees or smaller. If [Radius] is negative, the center angle will be 180
degrees or greater.
• MOVEC command execution will be completed (or No.2 in-position com-
plete) when the travel distance command output for all specified axes is
completed.
• During the command execution, the command code “0003h” is output to
the system variable “Command execution status” (SW0228 for Axis 1).
(For details of command codes, see
Code in Command Execution Status
• When a circular arc cannot be drawn with the specified radius or center
position, the radius is compensated to draw the arc. Having the radius in
radius specification or the radius calculated with center specification as
the initial value, the radius is increased to accomplish the radius at the
end position along the rotating angle.
• When executing circular interpolation on the axis with S-curve filter set-
ting, an arc larger than the specified arc may be drawn. The greater the S-
curve time constant is, the greater the overshoot amount (= Specified arc
- Actual arc) will be. Operate only after thorough adjustment is made.
Origin Search
(DATUM)
The DATUM command performs an origin search for the specified axis.
Command type
Single execution command
Format
DATUM_[<axis name>]<offset value> ---8---;
Ex: DATUM_[J01]0 [J02]0;
Operand
Axis name: J01 to J32
Note
(1) Word data is extended to long word data with a sign in the MC Unit.
(2) The actual value is determined by the setting value of the parameter
[P5AA02: Position command decimal point position].
(3) There is no influence. ABL specification is always used.
Radius < 0
End position
180 degrees
or smaller
Radius > 0
180 degrees
or greater
Start position
Operand
Setting range
Decimal
Variable specification
INC/ ABL
influ-
ence
Bit
Word
Long
word
Real
number
Indirect
specifi-
cation
Offset value
−
2147483648 to
2147483647
Yes
No
Yes (See
note 1.)
Yes
Yes (See
note 2.)
Yes
No (See
note 3.)
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