Mitsubishi Electronics QD75D, QD75P 12.7.6 Command in-position function

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MELSEC-Q
12 CONTROL SUB FUNCTIONS
12.7.6 Command in-position function
The "command in-position function" check s the remaining distance to the stop position
during the automatic deceleration of posit ioning control, and raises a flag. This f lag is
called the "command in-position flag". The command in-position flag is used as a front-
loading signal indicating beforehand the com pletion of the position control.
The details shown below explain about the "c ommand in-position function".
[1] Control details
[2] Precautions during control
[3] Setting the command in-position functi on
[4] Confirming the command in-position fl ag
[1] Control details
The following shows control details of the com mand in-position function.
(1) When the remaining distance to the stop posit ion during the automatic
deceleration of positioning control becomes eq ual to or less than the value
set in " Pr.16 Command in-position width", "1" is stored i n 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 1.8ms.