Mitsubishi Electric MELDAS C6 Interface Manual page 136

An example of the timing chart for the "M function strobe" signal (MF1, MF2 and MF3) is shown
below.
Command program
M code data 1
M function strobe 1 (MF1)
M code data 2
M function strobe 2 (MF2)
M code data 3
M function strobe 3 (MF3)
M function finish 1 (FIN1)
The following points must be observed in the sequence process.
Point
(1) When the M function is commanded, the MFn and M code data n is output.
(2) MFn is always the trigger in the sequence process to start the M function process.
(3) When the designated M function process is completed, the M function finish signal is
returned to the controller.
(4) The controller waits for the rising of the M function finish signal and then turns MFn OFF.
(5) MFn OFF is confirmed in the sequence process and then the M function finish signal is
turned OFF.
This completes the series of M function processes.
Handshaking with the controller and an accurate sequence process possible if
the Mfn conditions are inserted at the M function start and completed signals.
[Related signals]
M function strobe 2 (MF2: X645)
M function strobe 3 (MF3: X646)
M function strobe 4 (MF4: X647)
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***)
M22;
22
PC control
MFn
M decode circuit
M1
Designated M function process
M function finish confirmation
MFn
M2
M03M08;
3
8
Relay meaning a designated
M1
M function
Relay meaning completion of a
M2
designated M function
M function finish 1
Y71E
6-1-47
M10M25M05;
G00· · · ;
10
25
5