Mitsubishi Electric MELDAS C6 Interface Manual page 143

B con-
Signal name
tact
—
2ND M FUNCTION STROBE 1 BF1
[Function]
This signal informs that the 1st set of 2nd M function is selected in automatic operation (memory or
MDI) machining program or by manual numerical command input.
The 2nd M function is also called the B function.
With the signal (BF1), user PLC reads 2nd M function data 1.
[Operation]
The signal turns ON when:
(1) The 1st set of 2nd M function (B code) is specified in automatic operation (memory or MDI).
(2) 2nd M function (B code) is issued by manual numerical command input.
The signal turns OFF when:
(1) "M function finish 1" signal (FIN1) or "M function finish 2" signal (FIN2) is sent back.
(2) Reset condition occurs.
(Refer to the "In auto operation" signal (OP) section for details on the reset conditions.)
(Note 1) Only one 2nd M function can be issued in one block at a time.
The relation of the machining program and 2nd M function strobe is shown below.
Machining program ..... B03
(Note 2) The 2nd M function strobe (BF1) is not output during operation with M function lock (AFL
signal ON).
(Note 3) In the case of manual numerical command input, outputs are in accordance with 2nd M
function strobe 1 (BF1).
(Note 4) Address for 2nd M function can be selected from addresses A, B and C by using Setup
parameter. Set so that the address is different from the axis address.
[Related signals]
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
B08 ;
(1st set) (2nd set)
6-1-54
1st system 2nd system
X654 X6D4
Ignored.
2nd M function strobe (BF1)
Corresponding to 1st of 2nd M functions
3rd system
X754