6 F 3 B 0 3 6 2

6.3 Socket Interface Information

The information for the eight socket interface sockets held by the Ethernet Port can be read out with the T2N READ instruction. The Ethernet Port holds five words of socket status information for each socket. User programs should access this information as necessary when using socket interface transmission.

Remote port TCP/UDP port number

Remote port IP address

TCP/UDP port number for this socket

Socket status

Table 6.1 lists the structure of the socket interface information and the extended memory area addresses.

Table 6.1 Socket Interface Information

 

Socket identifier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

Remote port number (TCP only)

0F4BH

0F53H

0F5BH

0F63H

0F6BH

0F73H

0F7BH

0F83H

 

 

 

 

 

 

 

 

 

Remote port IP address (TCP only)

0F4CH

0F54H

0F5CH

0F64H

0F6CH

0F74H

0F7CH

0F84H

 

0F4DH

0F55H

0F5DH

0F65H

0F6DH

0F75H

0F7DH

0F85H

 

 

 

 

 

 

 

 

 

Local port TCP/UDP port number

0F4EH

0F56H

0F5EH

0F66H

0F6EH

0F76H

0F7EH

0F86H

 

 

 

 

 

 

 

 

 

Socket status

0F4FH

0F57H

0F5FH

0F67H

0F6FH

0F77H

0F7FH

0F87H

 

 

 

 

 

 

 

 

 

For UDP sockets, the remote port number and IP address data are invalid.

The socket status has the following structure.

F E D C B A 9 8 7 6 5 4 3 2 1 0

TCP AOPEN CONN RCLOSE

UDP POPEN RCV NOACK

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Toshiba T2N instruction manual Socket Interface Information Socket identifier