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12 CONTROL AUXILIARY FUNCTIONS
Positioning start signal
BUSY signal
M code ON signal
Cd. 14 M code OFF request
Md. 32 Valid M code
Positioning
Da. 1 Operation pattern
* m1 and m2 indicate set M codes.
(2) M code OFF request
Setting item
M code OFF
Cd.14
request
* Refer to section "5.7 List of control data" for details on the setting details.
Da.1 Operation pattern
Independent positioning control
00
(Positioning complete)
01
Continuous positioning control
11
Continuous path control
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(b) AFTER mode
The M code ON signal (XD, XE, XF) is turned ON at the positioning
completion, and the M code is stored in " Md.32 Valid M code".
ON
OFF
[Y10, Y11, Y12]
ON
[X4,X5,X6]
OFF
[XD,XE,XF]
OFF
0
V
Fig. 12.35 M code ON/OFF timing (AFTER mode)
When the M code ON signal (XD, XE, XF) is ON, it must be turned OFF by the
sequence program.
To turn OFF the M code ON signal, set "1" (turn OFF the M code signal) in
" Cd.14 M code OFF request".
Setting
value
1
Set "1: Turn OFF the M code ON signal".
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".)
The next positioning data will not be executed until the M code ON
signal is turned OFF.
The next positioning data will be executed, but a warning "M code
ON signal ON start" (warning code: 503) will occur.
12 - 59
ON
1
0
*
m1
01
00
Setting details
Processing
MELSEC-A
*
m2
t
Buffer memory address
Axis 1 Axis 2 Axis 3
1153
1203
1253
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Troubleshooting
