Mitsubishi Electric MELSEC FX Series User Manual page 100

FX communication
3 ) Specification Example 2
To transmit the data stored in data registers D100 and D101 from the programmable
controller (when the station number is 0, and data is specified in byte units)
Computer
Programmable
controller
M8127
Programmable
controller
On-demand
command
Program example
M8000
X000 M8002
0
M0 M8127
3
7
M8127 M8128
33
M8128
40
The PC number "FE" is automatically added by the
programmable controller
Write processing
D8127 100
➀
D8128 4
M8129
PLS
FNC 12
H1234 D100
MOV
FNC 12
H5678 D101
MOV
RST M8128
RST Y000
RST Y001
FNC 12
K100 D8127
MOV
FNC 12
K4 D8128
MOV
SET Y000
SET Y001
END
S
T 0 0 F E 3 4 1 2
X
30H 30H 46H 45H 31H 32H 33H 34H
02H
M8128 ON/OFF
M8129 ON
➁
D100 1234H
D101 5678H
Data transmission set to byte units.
· · · · · · · · ·
Start command signals a pulse.
· · · · · · · · ·
M0
Transmission data is set.
· · · · · · ·
On-demand error flag is reset
· · · · · · · · ·
(cannot start if M8128 is ON)
Confirming on-demand error, normal/
· · · · · · ·
abnormal external output is set.
Confirming on-demand error, normal/
· · · · · · ·
abnormal external output is set.
M8128 OFF : Normally transmitted.
ON : Data is not transmitted due to error.
E
7 8 5 6 T 9 2
X
38H 35H 36H 03H
37H 39H 32H
Set ON if a transmission
error occurs
The 2 hexadecimal digits of
each byte are transmitted in
ASCII, starting with the most
significant digit.The lower byte
of each word is transmitted first.
Commands 8
8-20