Socket Applications; Format - Omron CS Series Operation Manual

Socket Applications

7-2

Socket Applications

7-2-1

Format

Command Code
Socket Option
Socket Number
Results Storage Area
The MRES codes are shown in the following table along with the results they
indicate. Refer to 8-4-7 Troubleshooting with Response Codes for details on
response codes including the SRES.
MRES Execution results
00 Normal completion
01 Local node error
02 Remote node error
03 Unit error (controller error)
04 Service not supported
05 Routing error
10 Command format error
11 Parameter error
22 Status error
23 Operating environment error
25 Unit error
The format of the following FINS commands partially differs when the sockets
are used.
Command code
MRC SRC
27 01
02
03
04
10
11
12
13
14
The basic format of these commands is shown in the diagram below.
0 1 2 3 4 5
Results storage area
Command
code
Socket number
Socket option
Specifies the requested process.
For the TCP OPEN REQUEST (ACTIVE or PASSIVE), specifies whether or
not the keep-alive function is to be used. For all other commands it is dis-
abled. (Set to 0).
Specifies the socket number for which the process is requested, from 1 to 8.
Specifies the area to store the results of the requested process.
Name
UDP OPEN REQUEST
UDP RECEIVE REQUEST
UDP SEND REQUEST
UDP CLOSE REQUEST
PASSIVE TCP OPEN REQUEST
ACTIVE TCP OPEN REQUEST
TCP RECEIVE REQUEST
TCP SEND REQUEST
TCP CLOSE REQUEST
6 7 8 9 10 11 12
Parameters
Section 7-2
Page
169
170
172
173
174
177
180
181
183
Number of bytes from
the beginning of the frame
159