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MELSEC-Q
5   DATA USED FOR POSITIONING CONTROL 
 
5.1.2 Setting items for positioning parameters 
The table below lists items set to the positioning parameters. Setting of positioning 
parameters is similarly done for individual axes for all controls achieved by the QD75. 
For details of controls, refer to PART 2. For details of setting items, refer to Section 5.2 
"List of parameters". 
 
    Control    Major positioning control  Manual control  
     Position control   Other control  
 
 
 
 
 
 
 
 
 
 
 
 
 
Positioning parameter 
OPR control 
1-axis linear control 
2/3/4-axis linear interpolation control 
1-axis fixed-feed control 
2/3/4-axis fixed-feed control 
2-axis circular interpolation control 
1 to 4 axis speed control 
Speed-position or position-speed  
control 
Current  value changing 
JUMP instruction, NOP instruction, 
LOOP to LEND 
Manual pulse generator operation 
JOG operation 
Inching operation 
Related sub function 
Pr.1
 
Unit setting 
     
 
           
– 
Pr.2
 
No. of pulses per rotation (Ap)  
(Unit: pulse) 
                   
Pr.3
 
Movement amount per rotation (Al) 
                   
Pr.4
 
Unit magnification (Am) 
                   
12.3.2 
Pr.5
 
Pulse output mode 
                   
– 
Pr.6
 
Rotation direction setting 
                   
– 
Basic parameters 1 
Pr.7
 
Bias speed at start 
           
– – – 
 
– 
Pr.8
 
Speed limit value 
           
– – – 
 
12.4.1 
Pr.9
 
Acceleration time 0 
           
– – – 
 
Basic 
parameters 2 
Pr.10
 
Deceleration time 0 
           
– – – 
 
12.7.6 
Pr.11
 
Backlash compensation amount 
           
– – 
   
12.3.1 
Pr.12
 
Software stroke limit upper limit value  – 
         
– – 
   
Pr.13
 
Software stroke limit lower limit value  – 
         
– – 
   
Pr.14
 
Software stroke limit selection  – 
         
– – 
   
Pr.15
 
Software stroke limit valid/invalid setting  –  –  –  –  –  – 
       
12.4.3 
Pr.16
 
Command in-position width  – 
     
– 
 
– – – – 
12.7.5 
Pr.17
 
Torque limit setting value 
           
– – 
   
12.4.2 
Pr.18
 
M code ON signal output timing  – 
           
– – – 12.7.3 
Pr.19
 
Speed switching mode  – 
     
– – – – – –  – 
Pr.20
 
Interpolation speed designation method  – 
       
– – – – –  – 
Pr.21
 
Current feed value during speed control  –  –  –  – 
   
– – – –  – 
Pr.22
 
Input signal logic selection 
                   
– 
Pr.23
 
Output signal logic selection 
                   
– 
Pr.24
 
Manual pulse generator input selection  –  –  –  –  –  –  –  – 
 
– – 
Detailed parameters 1 
 Pr.150 
 
Speed-position function selection  –  –  –  –  – 
 
– – – –  – 
 
   :  Always set 
 
  :  Set as required 
 
  :  Setting not possible 
 
 :  Setting restricted 
   –  :  Setting not required. (This is an irrelevant item, so the set value will be ignored. If the value is the default value or within the setting range, there is no 
problem.)