6 - 17
MELSEC-F
FIXED BUFFER COMMUNICATION (WITH THE PROCEDURE EXIST
CONTROL METHOD)
6
6 - 17
(Send program)
(See Subsection 5.6.1)
• For FX
3U
/FX
3UC
Series PLCs
Program example for the unit No. 0
Open processing program
M8000
M200
X002
M307
M201
M202
M300
D101.2
D101.3
[=
H5
]
[MOV
K4M300
(M200
(M202
(M201
]
[MOVP
K32
]
D1000
[BMOVP
K32
]
)
[END
]
[MOVP
H1
]
[MOV
D101
]
)
)
)
* <<Reading the status of Ethernet module>>
* <<Sending 32 words from D1000 to the external device>>
U0\
G1602
Send
instruction
Initial
completed
HUB
connection
completed
OPEN
instruction/status
Transmission
normally
completed
Transmission
abnormally completed
U0\
G1664
U0\
G1665
U0\
G1610
U0\
G1610
U0\
G28
Transmission
abnormally
completed
Transmission
normally
completed
Send
instruction
(Self-holding)
Send
instruction
(Self-holding)
Initial
completed
Head of
send data
Fixed
buffer No.1
Send
request/
status
Send
request/
status
Value of
BFM#1610
Number of
send words
in the fixed
buffer No.1
Value of
BFM
#1610
Value of
BFM
#1610
Normal completion
processing
Abnormal completion
processing