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Mitsubishi Electric RD77MS2 - Page 86

Mitsubishi Electric RD77MS2
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84
3 MAJOR POSITIONING CONTROL
3.2 Setting the Positioning Data
Restrictions
The error "Continuous path control not possible" (error code: 1A1EH to 1A20H) will occur and the operation cannot start if
"continuous path control" is set in "[Da.1] Operation pattern". ("Continuous path control" cannot be set in fixed-feed control.)
"Fixed-feed" cannot be set in "[Da.2] Control method" in the positioning data when "continuous path control" has been set in
"[Da.1] Operation pattern" of the immediately prior positioning data. (For example, if the operation pattern of positioning
data No. 1 is "continuous path control", fixed-feed control cannot be set in positioning data No. 2.) The error "Continuous
path control not possible" (error code: 1A1EH to 1A20H) will occur and the machine will carry out a deceleration stop if this
type of setting is carried out.
In 2- or 3-axis fixed-feed control, if the movement amount of each axis exceeds "1073741824 (=2
30
)" when "0: Composite
speed" is set in "[Pr.20] Interpolation speed designation method", the error "Outside linear movement amount range" (error
code: 1A15H, 1A16H) occurs at a positioning start and the positioning cannot be started. (The maximum movement
amount that can be set in "[Da.6] Positioning address/movement amount" is "1073741824 (= 2
30
)".
In 4-axis fixed-feed control, set "1: Reference axis speed" in "[Pr.20] Interpolation speed designation method". If "0:
Composite speed" is set, the error "Interpolation mode error" (error code: 199AH) occurs and the positioning cannot be
started.
Setting positioning data
When using fixed-feed control (fixed-feed 1), set the following positioning data.
: Always set, : Set as required, : Setting restricted, : Setting not required
*1 To use the 2- to 4-axis fixed-feed control (interpolation), it is required to set the axis used as the interpolation axis.
Refer to the following for information on the setting details.
Page 445 Positioning Data
Setting item Setting required/not required
for the reference axis
Setting required/not required
for the interpolation axis
[Da.1] Operation pattern 
[Da.2] Control method 
[Da.3] Acceleration time No. 
[Da.4] Deceleration time No. 
[Da.6] Positioning address/movement amount 
[Da.7] Arc address 
[Da.8] Command speed 
[Da.9] Dwell time/JUMP destination positioning data No. 
[Da.10] M code/Condition data No./Number of LOOP to LEND repetitions/
Number of pitches

[Da.20] Axis to be interpolated No.1
*1
[Da.21] Axis to be interpolated No.2
*1
[Da.22] Axis to be interpolated No.3
*1
[Da.27] M code ON signal output timing 
[Da.28] ABS direction in degrees 
[Da.29] Interpolation speed designation method 

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