Mitsubishi Electric MELSEC-L LD75P User Manual page 291

(1) Starting by inputting positioning start signal
(a) Operation when starting
• When the positioning start signal turns ON, the start complete signal and BUSY signal turn ON, and the
positioning operation starts. It can be seen that the axis is operating when the BUSY signal is ON.
• When the positioning start signal turns OFF, the start complete signal also turns OFF. If the positioning start
signal is ON even after positioning is completed, the start complete signal will remain ON.
• If the positioning start signal turns ON again while the BUSY signal is ON, the warning "Start during
operation (warning code: 100)" will occur.
• The process taken when positioning is completed will differ depending on cases below.
■When next positioning is not to be carried out
• If a dwell time is set, the system will wait for the set time to pass, and then positioning will be completed.
• When positioning is completed, the BUSY signal will turn OFF and the positioning complete signal will turn ON. However, when using
speed control or when the positioning complete signal ON time is "0", the signal will not turn ON.
• When the positioning complete signal ON time is passed, the positioning complete signal will turn OFF.
■When next positioning is to be carried out
• If a dwell time is set, the system will wait for the set time to pass.
• When the set dwell time is passed, the next positioning will start.
V
Positioning
OFF
Positioning start signal
[Y10, Y11, Y12, Y13]
Start complete signal OFF
[X10, X11, X12, X13]
BUSY signal OFF
[XC, XD, XE, XF]
Positioning complete
OFF
signal
[X14, X15, X16, X17]
The BUSY signal [XC, XD, XE, XF] turns ON even when position control of movement amount 0 is executed. However, since
the ON time is short, the ON status may not be detected in the program.
(The ON status of the start complete signal [X10, X11, X12, X13], positioning complete signal [X14, X15, X16, X17] and M
code ON signal [X4, X5, X6, X7] can be detected in the program.)
ON
ON
ON
ON
CHAPTER 6 PROGRAM USED FOR POSITIONING CONTROL
Dwell time
6
t
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