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APPENDICES
A
Appendix 1 Buffer Memory Details
Appendix 1.3 Ethernet port operation area
(7) Direct MELSOFT connection port (buffer memory address: 1344 to 1355 (540
H
to 54B
H
))
Address Name Description
1344
(540
H
)
Open system
Data of the open system is stored.
3: UDP (fixed)
1345
(541
H
)
Protocol
Data of the protocol is stored.
1: UDP (fixed)
1346
(542
H
)
Communication data code
A communication data code is stored.
0: Binary code (fixed)
1347
(543
H
)
Own Station Port No.
The port number of the own station is stored.
1390
H
: Own station's port (fixed)
1348
(544
H
)
System area
1349
(545
H
)
Connection status
The current status is stored.
0000
H
: Error
0001
H
: Normal
1350 to 1351
(546
H
to 547
H
)
System area
1352
(548
H
)
Latest error code
The latest error code is stored.
0: No error
Other than 0: Latest error code
1353
(549
H
)
Destination port No.
The port number of the communication target is stored.
0000
H
: No setting, or no communication log in the past
Other than 0000
H
: Port number of a device, with which the latest
communication was made
1354 to 1355
(54A
H
to 54B
H
)
Destination IP address
The IP address of the communication target is stored.
00000000
H
: No setting, or no communication log in the past
Other than 00000000
H
: IP address of the device, with which the latest
communication was made