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9.3 Settings on the PLC Side
9.3.1
Connection Information Settings
A memory area such as the data registers of the programmable controller is set aside, and the data to be
written to the connection information area of the shared memory is specified when the open processing
is carried out.
When the transparent communication is being used, the contents of specified data are as indicated
below.
Contents of data settings
Address
Name
Setting area
DTn
for application
being used
Source node
DTn+1
port No.
Partner node
DTn+2
IP address (L)
Partner node
DTn+3
IP address (H)
Partner node
DTn+4
port No.
Partner node
DTn+5
MEWTOCOL
station number
DTn+6
Partner node
DTn+7
Ethernet
address
DTn+8
Note:
We recommend specifying a port number of 8000 (1F40) or higher.
-
When using the Active open mode, if the partner node has no ARP function, specify the Ethernet
-
address of the partner node for "DTn+6 to DTn+8".
9-4
Set value and Explanation
Set value: 8001H
When using UDP/IP
Set value: 0001H
When using TCP/IP
Active open
Set value: 0301H
When using TCP/IP
Fullpassive open
Set value: 0201H
When using TCP/IP
Unpassive open
Specify any port number other than 0H.
(A value of 8000 (1F40) or higher is recommended.)
Specify the IP address of the partner node.
Example: To specify 192.168.1.2 (C0 A8 01 02H):
DTn+2: 0102H
DTn+3: C0A8H
This is not necessary when using the Unpassive open mode of
TCP/IP.
Specify any port number for the partner node other than 0H.
(A value of 8000 (1F40) or higher is recommended.)
This is not necessary when using the Unpassive open mode of
TCP/IP.
(Not used)
When using the Active open mode of TCP/IP, if the partner node has
no ARP function, specify the Ethernet address of the partner node. In
any other case, specify 0H.
Example: To specify 1.2.3.4.5.6:
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