11-1SectionCommand Codes and Response Codes
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11-1 Command Codes and Response Codes
11-1-1 Command Code List
The command codes listed in the following table can be sent to an Ethernet Unit.
Command code
Name Page
MRC SRC
04 03 RESET 193
05 01 CONTROLLER DATA READ 193
06 01 CONTROLLER STATUS READ 195
08
01 INTERNODE ECHO TEST 196
02 BROADCAST TEST RESULTS READ 197
03 BROADCAST DATA SEND 197
21
02 ERROR LOG READ 197
03 ERROR LOG CLEAR 198
27
01 UDP OPEN REQUEST 199
02 UDP RECEIVE REQUEST 200
03 UDP SEND REQUEST 201
04 UDP CLOSE REQUEST 203
10 PASSIVE TCP OPEN REQUEST 204
11 ACTIVE TCP OPEN REQUEST 206
12 TCP RECEIVE REQUEST 207
13 TCP SEND REQUEST 209
14 TCP CLOSE REQUEST 210
20 PING 211
50 IP ADDRESS TABLE WRITE 212
60 IP ADDRESS TABLE READ 213
61 IP ROUTER TABLE READ 214
62 PROTOCOL STATUS READ 215
63 MEMORY STATUS READ 219
64 SOCKET STATUS READ 221
65 ADDRESS INFORMATION READ 221
11-1-2 Response Code List
Response codes are 2-byte codes which indicate the results of command
execution. They are returned in the response following the command code.
The first byte of a response code is the MRES (main response code), which
categorizes the results of command execution. The second byte is the SRES
(sub-response code) which specifies the results.
Command
code
Response
code
MRC: Main request code
SRC: Sub-request code
MRES: Main response code
SRES: Sub-response code
MRC SRC MRES SRES
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