2-3 socket service request switches, Socket service request switches – Omron W343-E1-07 User Manual

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Using Socket Services with Socket Service Request Switches

Section 6-2

Note These response codes will be returned only on large, multilevel networks.

TCP Socket Close Request

6-2-3

Socket Service Request Switches

Socket Service Request Switches are manipulated to request socket ser-
vices. These bits are called Socket Service Request Switches, and are turned
ON in the CPU Unit to request socket services through the Ethernet Unit.

The Socket Service Request Switches are allocated in the CPU Bus Unit Area
in the CPU Area starting at the word n+ 19. The value of n can be calculated
from the unit number as follows:

n = 1500 + (25 x unit number)

110C

Request Switch turned ON during other processing.

220F

Specified socket is already processing a send request.

2210

The specified socket is not open.

2211

Unit is busy; cannot execute.

2607

Specified Socket Service Parameter Area is already being used for
another socket.

0020

Connection with remote socket broken during send (EPIPE).

003E

Internal buffer cannot be obtained due to high reception traffic
(ENOBUFS).

0042
(See note.)

The remote IP address is a broadcast address and the number of
bytes to send is greater than 1,472 bytes (EMSGSIZE).

0044
(See note.)

ICMP data received (ENOPROTOOPT).

0045
(See note.)

Error in communications with remote node (ECONNABORTED).

004A
(See note.)

Error in communications with remote node (ECONNREFUSED)

004B
(See note.)

Error in communications with remote node (ECONNREFUSED)

004E
(See note.)

Remote IP address parameter error (ENETUNREACH).

004F
(See note.)

ICMP data received (EHOSTDOWN).

0051
(See note.)

Remote IP address parameter error (EHOSTUNREACH).

0053
(See note.)

Error in communications with remote node (ETIMEDOUT).

0081

The specified socket was closed during send processing.

Response

code

Meaning

0000

Normal end