Mitsubishi Electric MELSEC-Q Series User Manual page 341

POINT
The BUSY signal 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 sequence program.
(The ON status of the start complete signal, positioning complete signal and M
code ON signal can be detected in the sequence program.)
Starting time chart
The time chart for starting each control is shown below.
(1) Time chart for starting "machine HPR"
Positioning start signal
All axis servo ON
Md. 26 Axis operation status
PLC READY signal
READY signal
Start complete signal
( Md. 31 Status: b14)
BUSY signal
Error detection signal
( Md. 31 Status: b13)
Cd. 3 Positioning start No.
HPR request flag
( Md. 31 Status: b3)
HPR complete flag
( Md. 31 Status: b4)
Chapter 6 Sequence Program Used for Positioning Control
V
[Y10]
OFF
ON
[Y1]
OFF
Servo OFF
ON
[Y0]
OFF
ON
[X0]
OFF
OFF
[X10]
OFF
OFF
OFF
OFF
Fig. 6.4 Time chart for starting "machine HPR"
6 - 59
Proximity dog
Zero signal
ON
Standby
ON
ON
9001
ON
t
ON