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MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
(2) Precautions during control
(a) A command in-position width check will not be carried out in the following
cases.
•
During deceleration by a stop command or sudden stop command.
•
During speed control, or during the speed control of speed/position
changeover control.
Command in-position flag
[ Md. 40 Status: b2]
Speed to position changeover
t
Positioning
control start
Speed/position
changeover
control start
Command in-position
width setting value
V
Execution of the command in-position width check
OFF
ON
Command in-position
width setting value
Execution of the command in-position
width check
Fig. 12.42 Command in-position width check
(b) The command in-position flag will be turned OFF in the following cases.
("0" will be stored in "
Md.40 Status: b2".)
•
At the positioning control start
•
At the speed control start
•
At the zero point return control start
•
At the JOG operation start
•
When the manual pulse generator operation is enabled.
(c) The "
Pr.17 Command in-position width" and command in-position flag
(
Md.40 Status: b2) of the reference axis are used during interpolation
control.
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