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Mitsubishi Electric MELDAS C6 Interface Manual Page 135

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B con-
Signal name
tact
M FUNCTION STROBE 1
[Function]
This signal informs that the 1st set of miscellaneous functions (M code) is commanded with the
automatic operation (memory, MDI) machining program or manual numerical command input.
The miscellaneous function is also called the M function, and is used to issue miscellaneous functions
such as ON/OFF of the cutting oil, and normal/reverse/stop of the spindle, etc., for the target machine.
[Operation]
This signal turns ON when:
(1) The 1st set of M function (M code) is specified in automatic operation (memory or MDI).
(2) M function (M code) is specified by manual numerical command input.
The signal turns OFF when:
(1) "M function finish 1" signal (FIN1) or "M function finish 2" signal (FIN2) turns ON.
(2) Reset condition occurs.
Refer to the "In auto operation" signal (OP) section for details on the reset conditions.
(Note 1) When built-in PLC is used, four sets of M functions can be specified at the same time the
relation of the machining program and M function strobe is shown below.
Machining program ..... M03
(Note 2) During operation with miscellaneous function lock (AFL signal ON), the M function strobe
(MF1, MF2, MF3, MF4) will not be output. However, this signal will be output when the M
code is commanded independently (M00, M01, M02, M30).
(Note 3) Since M98 (subprogram call), M99 (return from subprogram), etc. are handled within the
controller, M function strobe is not output.
(Note 4) The M function strobe will not be output when the M function is output if the "M function
finish 1" signal (FIN1) or "M function finish 2" signal (FIN 2) is ON.
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
MF1
M08
(1st set) (2nd set) (3rd set) (4th set)
6-1-46
1st system
2nd system
X644
X6C4
M10
M18
Corresponds to M function strobe 1 (MF1),
1st set of M code
Corresponds to M function strobe 2 (MF2),
2nd set of M code
Corresponds to M function strobe 3 (MF3),
3rd set of M code
Corresponds to M function strobe 4 (MF4),
4th set of M code
3rd system
X744

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