Mitsubishi Electric MELSEC-L LD75D, User Manual

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12.7.3
M code output function
The "M code output function" is used to command sub work (clamping, drill rotation, tool replacement, etc.) related to
the positioning data being executed.
When the M code ON signal [X4, X5, X6, X7] is turned ON during positioning execution, a No. called the M code is
stored in "[Md.25] Valid M code".
These "[Md.25] Valid M code" are read from the CPU module, and used to command auxiliary work. M codes can be
set for each positioning data. (Set in setting item "[Da.10] M code" of the positioning data.)
The timing for outputting (storing) the M codes can also be set in the "M code output function".
The details shown below explain about the "M code output function".
• M code ON signal output timing
• M code OFF request
• Control precautions
• Setting method
• Reading M codes
(1) M code ON signal output timing
The timing for outputting (storing) the M codes can be set in the "M code output function". (The M code is stored
in "[Md.25] Valid M code" when the M code ON signal is turned ON.)
The following shows the two types of timing for outputting M codes: the "WITH" mode and the "AFTER" mode.
(a) WITH mode
The M code ON signal [X4, X5, X6, X7] is turned ON at the positioning start, and the M code is stored in
"[Md.25] Valid M code".
01 00
m1 m2
V
t
1 0 1 0 0 0
OFF
OFF
OFF
ON
ON
ON
Positioning start signal
BUSY signal
M code ON signal
Positioning
m1 and m2 indicate set M codes.
Dwell time
M code OFF request
Valid M code
Operation pattern
[XC, XD, XE, XF]
[Y10, Y11, Y12, Y13]
[X4, X5, X6, X7]
Cd.7
Da.1
Md.25