Mitsubishi A1SD75M1, User Manual

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12 - 92
MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
12.7.5 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 set 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.
(a) 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.17 Command in-position width", "1" is stored in the command in-
position flag ( Md.40 Status: b2).
(Command in-position width check)
Remaining distance
≤
"
Pr.17
Command in-position width" setting value
Command in-position
width setting value
Positioning
V
t
ON
OFF
Command in-position flag
[ Md.40 Status : b2]
Fig. 12.41 Command in-position operation
(b) A command in-position width check is carried out every 56.8ms.