Mitsubishi Electric MELSEC-L LD75P User Manual page 584

(2) M code OFF request
When the M code ON signal [X4, X5, X6, X7] is ON, it must be turned OFF by the program.
To turn OFF the M code ON signal, set "1" (turn OFF the M code signal) in "[Cd.7] M code OFF request".
Setting item
M code OFF
[Cd.7]
request
Refer to  Page 211, Section 5.7 for the information on detail settings.
The next positioning data will be processed as follows if the M code ON signal is not turned OFF. (The processing
differs according to the "[Da.1] Operation pattern".)
[Da.1] Operation pattern
Independent positioning control
00
(Positioning complete)
01 Continuous positioning control
11 Continuous path control
Positioning start signal
[Y10, Y11, Y12, Y13]
BUSY signal
[XC, XD, XE, XF]
M code ON signal
[X4, X5, X6, X7]
Cd.7
M code OFF request
Md.25
Valid M code
Positioning
Operation pattern
Da.1
If the M code output function is not required, set a "0" in setting item "[Da.10] M code" of the positioning data.
582
Setting value
1 Set "1: Turn OFF the M code ON signal".
The next positioning data will not be executed until the M code ON signal is turned OFF.
The next positioning data will be executed. If the M code is set to the next positioning data, a warning
"M code ON signal ON start" (warning code: 503) will occur.
ON
OFF
ON
OFF
ON
OFF
0 1 0
m1 m2 m3
V
11 11
Setting details
Processing
1 0
m1 to m3 indicate set M codes.
00
Warning occurs at this timing.
Buffer memory address
Axis 1 Axis 2 Axis 3
1504 1604 1704
t
Axis 4
1804