Mitsubishi Electric FX3U-ENET User Manual page 101

5 COMMUNICATION PROCEDURE
Open status
Open allowed status
Closed status
Initial normal completion
BFM#27=0001
H
Hub connected signal
BFM #28b7
OPEN/ CLOSE instruction
status BFM#1602
Open completion signal
BFM#20480
Open request signal
BFM#20482
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1) Parameter update
Power-on
completed
2)
Hub connected
3)
OPEN
CLOSE
instruction
status
0000 W0001
H
1) After communicating the parameter settings, confirm the normal
completion of the Ethernet module initial processing.
(Initial completion signal BFM#27 "0001
2) Confirm that the Ethernet module and hub are connected. (BFM#28
b7:ON)
3) Start the open processing writing with pulse execution instruction 0001
to BFM#1602.
4) The Ethernet module executes the open processing.
• Sends the open request (SYN).
5) When the open processing completes normally
• Open completion signal BFM#20480 b0
• BFM#1602 "0005
Data communication is enabled.
When the open processing completes abnormally
• The open error code is stored in the buffer memory.
• Open error detection (BFM#1602 "0010
• Area for module status (BFM#28 b6:ON)
6) Start the close processing writing 8000
7) The Ethernet module executes the close processing.
• Sends the close request (FIN).
8) When the close processing completes normally
• Open completion signal (BFM#2048 b0)
• Open/Close instruction status (BFM#1602 "0000
OPEN status
OPEN
0005
H
instruction
processing
(OPEN failure
0003
H
H
0010 )
H
SYN
4) 5)
SYN+ACK
"
H
MELSEC-F
CLOSE
CLOSE
CLOSE
processing status
W8000
0009
H
H 0000
6)
FIN
7) 8)
FIN+ACK
")
H
: ON
(*1)
(*2)
" or "0015 ")
H H
to BFM#1602.
H
(*3)
: OFF
")
H
H
H
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