Rockwell Automation 1768-EWEB EtherNet/IP Web Server Module User Manual - Manual (Page 125)

125 Publication ENET-UM527E-EN-P - October 2006
Appendix
B
Socket Interface
About This Appendix The socket interface lets you use a Logix controller to communicate
via the web server module with Ethernet devices that do not support
the EtherNet/IP application protocol, such as bar code scanners, RFID
readers, or other standard Ethernet devices.
IMPORTANT
Firmware revision 3.1 or later of the 1756-EWEB module and
any firmware revision of the 1768-EWEB module supports this
socket interface.
Topic Page
Socket Interface Architecture 126
Communicate With the Socket Object Via a MSG Instruction 132
Service Timeouts 134
MSG Instruction Timeouts 134
Socket Instance Timeouts 134
Programming Considerations 135
Socket Object Services 140
CreateSocket 141
OpenConnection 143
AcceptConnection 146
Read 148
Write 151
DeleteSocket 153
DeleteAllSockets 154
Possible Error Codes for Socket Services 155
Socket Attributes 157
Troubleshoot Socket Applications 160