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MELSEC-Q

 

11   MANUAL CONTROL 

 

11.3.3  Setting the required parameters for inching operation  

The "Positioning parameters" must be set to carry out inching operation. 
The following table shows the setting items of the required parameters for carrying out 
inching operation.  When only inching operation will be carried out, no parameters 
other than those shown below need to be set. (Use the initial values or setting values 
within a range where no error occurs for trouble-free operation.) 

 

Setting item 

Setting requirement 

Factory-set initial value 

(setting details) 

 Pr.1    Unit setting 

 

3 (PLS) 

 Pr.2    No. of pulses per rotation (AP) (Unit: PLS) 

 

20000 

 Pr.3    Movement amount per rotation (AL) (Unit: PLS) 

 

20000 

 Pr.4    Unit magnification (AM) 

 

1 (1 times) 

 Pr.11    Backlash compensation amount (Unit: PLS) 

 

0 

 Pr.12    Software stroke limit upper limit value (Unit: PLS) 

 

2147483647 

 Pr.13    Software stroke limit lower limit value (Unit: PLS) 

 

–2147483648 

 Pr.14    Software stroke limit selection 

 

0 (current feed value) 

 Pr.15    Software stroke limit valid/invalid setting 

 

0 (valid) 

 Pr.17    Torque limit setting value (Unit: %) 

 

300 

Positioning parameters 

 Pr.31   JOG speed limit value (Unit: PLS/s) 

 

20000 

 

  :  Setting always required.  
  :  Set according to requirements (Leave set to the initial value when not used.)  

 

REMARK 

•

 Positioning parameter settings work in common for all control using the QD75MH.  

When carrying out other controls ("major positioning control", "high-level 
positioning control", and "OPR positioning control"), the respective setting items 
must also be set. 

•

 Parameters are set for each axis. 

•

  Refer to Chapter 5 "Data Used for Positioning Control" for setting details.