Mitsubishi Electric MELDAS C6 Interface Manual page 133

B con-
Signal name
tact
M CODE INDEPENDENT
—
OUTPUT M00
[Function]
This signal informs that a special miscellaneous function (M00) is selected and commanded. When
a special M function is specified, "Normal miscellaneous function strobe" signal and "M code data"
are output.
M code single outputs include M01, M02 and M30.
[Operation]
When M00, M01, M02 or M30 is specified during auto operation (memory or MDI), or by manually
set numerical command, this signal turns ON. The signal turns OFF if "M function finish" signal or
"Reset & rewind" signal is given.
Machining M independent
program
M00
M01
M02
M30
If motion command and/or dwell is present in the same block, the signal turns ON after completion
of dwell.
However, the signal is not output if "M function finish" signal turns ON before completion of motion
command or dwell.
Generally, each M code is used for the following purpose:
M00 ..... Program stop
M01 ..... Optional stop
M02, M30 ..... Program end
• Operation on user PLC side
(1) For M00
When M00 is input, "Single block" signal (SBK) is turned ON and "M function finish" signal (FIN
1 or FIN 2) is sent back.
(2) For M01
When M01 is input, optional stop switch setting (ON or OFF) is checked. If the setting is "ON",
"Single block" signal is turned ON and "M function finish" signal is sent back, like the case with
M00. If the setting is "OFF", "M function finish" signal is sent back immediately.
(3) For M02, M30
When motion where M02 or M30 was input (spindle stop, coolant stop, etc.) is completed,
"Reset & rewind" signal (RRW) is sent back instead of "M function finish" signal. If "M function
finish (FIN 1, FIN 2)" signal is sent back, "program error" may occur.
[Related signals]
(1) M code independent output M01 (DM01: X641)
(2) M code independent output M02 (DM02: X642)
(3) M code independent output M30 (DM30: X643)
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
DM00
Abbr.
output
M00 DM00
M01 DM01
M02 DM02
M30 DM30
1st system
X640
Answer back to controller
FIN 1 or FIN 2
FIN 1 or FIN 2
Reset & rewind signal ("FIN" is not sent back)
Reset & rewind signal ("FIN" is not sent back)
6-1-44
2nd system 3rd system
X6C0 X740