Rockwell Automation 1768-EWEB EtherNet/IP Web Server Module User Manual - Manual (Page 132)

Publication ENET-UM527E-EN-P - October 2006
132 Socket Interface
Communicate With the
Socket Object Via a MSG
Instruction In Logix controller programs, use a CIP Generic MSG instruction to
request socket services.
Configure the MSG with these values.
CIP Generic Msg Parameter Description
MSG Type CIP Generic.
Service Type With RSLogix software version 15, select a socket service type from the drop down. The software
automatically fills in the appropriate Service Code and Class values.
With RSLogix 5000 software prior to version 15, select Custom. You have to specify the Service
Code and Class values.
Select Get Attributes Single or Set Attributes Single when getting or setting a Socket Object
attribute (see Socket Attributes on page 157)
Service Code Each socket service has a unique service code.
Class Specify 342 (hexadecimal) for the Socket Object
Instance Specify:
• 0 for CreateSocket and DeleteAllSockets services
• Instance number returned by CreateSocket for other services
Use a relay ladder instruction or structured text statement to move the returned instance number
from a CreateSocket service into the .Instance member of a MSG instruction.
Attribute Specify the attribute value only when getting or setting an attribute, not when using other services.
Source Element Contains the request parameters for the socket service.
Create a user defined type for the request parameters for each service.