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MELSEC-F
COMMUNICATION PROCEDURE5
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1) After communicating the parameter settings, confirm the normal
completion of the Ethernet module initial processing.
(Initial normal completion signal (BEF#27) : 0001H)
2) Start the open processing by writing 0001H to the BFM#1602.
3) The Ethernet module executes the open processing.
(Internal processing only)
4) When the open processing completes normally
Data communication is enabled.
When the open processing completes abnormally
5) Start the close processing by writing 8000H to the BFM#1602.
6) The Ethernet module executes the close processing.
(Internal processing only)
7) When the close processing completes normally
(Open request signal (BFM#20482 b0) : ON)
• Open completion signal (BFM#20482 b0) :ON
• Reading value of BFM#1602 :0005H
• Open status (BFM#1602) :0010H or 0015H
• Open abnormal detection signal (BFM#28 b6) :ON
• Open/Close instruction status (BFM#1602) :0000H
Open status
Closed status
Initial normal completion
BFM#27=001
Open completion signal
BFM#20480
Internal
processing
Internal
processing
Power-on
Parameter
update completed
1)
2)
3) 4) 6) 7)
OPEN/CLOSE instruction
and status BFM#1602 R0005H
R
0000H
R
0000H
W0001HW
8000H
R
0009H