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MELSEC-Q

 

9   MAJOR POSITIONING CONTROL 

 

 Restrictions 

 

An error will occur and the positioning will not start in the following cases. The 
machine will immediately stop if the error is detected during a positioning 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 "Outside linear movement amount range error (error code: 504)" occurs 

at a positioning start. 

(The maximum movement amount that can be set in "

Da.6

 Positioning 

address/movement amount" is "1073741824 (=2

30

)".) 

 

 Positioning data setting example 

 

[Reference axis is designated as axis 1.] 
The following table shows setting examples when "3-axis linear interpolation 
control (ABS linear 3)" is set in positioning data No. 1 of axis 1. (The required 
values are also set in positioning data No. 1 of axis 2 and axis 3.) 

 

Axis 

 
Setting item 

Axis 1 

(reference 

axis) setting 

example 

Axis 2 

(interpolation 

axis) setting 

example 

Axis 3 

(interpolation 

axis) setting 

example 

Setting details 

 Da.1  Operation pattern 

Positioning 

complete 

– – 

Set "Positioning complete" assuming the next 
positioning data will not be executed. 

 Da.2  Control system 

ABS linear 3 

– 

– 

Set absolute system 3-axis linear 
interpolation control. 

 Da.3  

Acceleration time 
No. 

1 – – 

Designate the value set in "

Pr.25

 

Acceleration time 1" as the acceleration time 
at start. 

 Da.4  

Deceleration time 
No. 

0 – – 

Designate the value set in "

Pr.10

 

Deceleration time 0" as the deceleration time 
at deceleration. 

 Da.5  

Axis to be 
interpolated 

2 – – 

Setting not required (setting value will be 
ignored). 
When axis 1 is used as a reference axis, the 
interpolation axes are axes 2 and 3. 

 Da.6  

Positioning address/ 
movement amount 

4000.0 µm  8000.0 

µm 4000.0 

µm 

Set the end point address. (Assuming "mm" is 

set in "

Pr.1

 Unit setting".) 

 Da.7  Arc address 

– 

– 

– 

Setting not required (setting value will be 
ignored). 

 Da.8  Command speed 

6000.00 
mm/min 

– – 

Set the speed during movement to the end 
point address. 

 Da.9  Dwell time 

500ms 

– 

– 

Set the time the machine dwells after the 
positioning stop (pulse output stop) to the 
output of the positioning complete signal. 

Ax

is 1   Positioning data N

o. 1 

 Da.10 

M code 

10 

– 

– 

Set this when other sub operation commands 
are issued in combination with the No. 1 
positioning data. 

 

     Refer to Section 5.3 "List of positioning data" for information on the setting details.