Mitsubishi Electric MELDAS C6 Interface Manual page 144

B con-
Signal name
tact
—
S FUNCTION STROBE 1
[Function]
This signal informs that S (spindle) function (S code) is specified in automatic operation (memory or
MDI) machining program or by manual numerical command input.
The spindle function is also called the S function, and is used to command the spindle speed.
With the signal (SF1), user PLC reads S code data 1.
[Operation]
The signal turns ON when:
(1) S function (S code) is specified in automatic operation (memory or MDI).
(2) S function 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) The S function strobe (SF) is not output during operation with M function lock (AFL signal
ON).
(Note 2) When the S function is commanded, the "Spindle gear shift command" signal (GR1, GR2)
and "Spindle no gear selected" signal (SNGE) are output in addition to this signal (SF1).
Refer to the sections of each signal for details.
(Note 3) By combining this signal (SF1), "Spindle gear select input" signal (GI1, GI2) and "Gear
shift completed" signal (GFIN), the data can be converted into S-analog data.
(Data is transferred when the spindle controller is the high-speed serial connection
specification type.)
An example of the timing chart for the S function strobe signal (SF1) is shown below.
Command program
S code data
S function strobe 1 (SF1)
M function finish 1 (FIN1)
[Related signals]
S code data (R212 to 219, R264 to 269)
Spindle gear shift command (GR1, GR2: X98D, X98E)
Spindle no gear selected (SNGE: X986)
Spindle gear selection input (GI1, GI2: YD30, YD31)
Spindle gear shift complete (GFIN: YD26)
M function finish 1 (FIN1: Y71E)
M function finish 2 (FIN2: Y71F)
6. EXPLANATION OF INTERFACE SIGNALS
6.1 PLC Input Signals (Bit Type: X***)
Signal
abbreviation
SF1
6-1-55
1st system 2nd system
X658 X6D8
S1000; G00X100.;
1000
3rd system
X758