M Code Output Function - Mitsubishi Electric A1SD75P1-S3 User Manual

12 CONTROL AUXILIARY FUNCTIONS

12.6.3 M code output function

The "M code output function" is used to command auxiliary work (clamping, drill
rotation, tool replacement, etc.) related to the positioning data being executed.
When the M code ON signal (XD, XE, XF) is turned ON during positioning execution, a
No. called the M code is stored in " Md.32 Valid M code".
These " Md.32 Valid M code" are read from the PLC CPU, and used to command
auxiliary work. M codes can be set for each positioning data. (Set in setting item
" Da.9 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".
(1) M code ON signal output timing
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
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(1) M code ON signal output timing
(2) M code OFF request
(3) Precautions during control
(4) Setting the M code output function
(5) Reading M codes
The timing for outputting (storing) the M codes can be set in the "M code output
function". (The M code is stored in " Md.32 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 (XD, XE, XF) is turned ON at the positioning start,
and the M code is stored in " Md.32 Valid M code".
OFF
[Y10, Y11, Y12]
[X4,X5,X6]
OFF
[XD,XE,XF]
OFF
0
V
* m1 and m2 indicate set M codes.
Fig. 12.34 M code ON/OFF timing (WITH mode)
ON
ON
0 1 0
1 0
* *
m2
m1
Dwell time
01
12 - 58
MELSEC-A
t
00