Mitsubishi Electronics QD75D, QD75P user manual Command in-position function, Control details

12CONTROL SUB FUNCTIONS

12.7.6 Command in-position function

MELSEC-Q

The "command in-position function" checks the remaining distance to the stop position during the automatic deceleration of positioning control, and raises a flag. 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

	V
	Positioning	t
	ON
Command in-position flag OFF
[	Status : b2]

Command in-position width setting value

Fig. 12.43 Command in-position operation

(2) A command in-position width check is carried out every 1.8ms.

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