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MELSEC-Q

 

12   CONTROL SUB FUNCTIONS 

 

12.7.6 Command in-position function 

The "command in-position function" checks the remaining distance to the stop position 
during the automatic deceleration of positioning control, and sets "1". This flag is called 
the "command in-position flag". The command in-position flag is used as a front-
loading signal indicating beforehand the completion of the position control.  

 

The details shown below explain about the "command in-position function".  
  [1] Control details 
  [2] Precautions during control 
  [3] Setting the command in-position function 
  [4] Confirming the command in-position flag 

 

[1]   Control details 

The following shows control details of the command in-position function. 
(1)  When the remaining distance to the stop position during the automatic 

deceleration of positioning control becomes equal to or less than the value 
set in "

Pr.16

 Command in-position width", "1" is stored in the command 

in-position flag (

Md.31

Status: b2).  

 

(Command in-position width check) 

 

Remaining distance ≤ "

Pr.16

 Command in-position width" setting value 

 

Command in-position 
width setting value

Positioning

V

t

ON

OFF

Command in-position flag

[ Md.31 Status : b2]

 

Fig. 12.43 Command in-position operation 

 

(2)  A command in-position width check is carried out every 1.7ms.