ProSoft Technology MVI46-DFNT - Manual (Page 142)

Reference MVI46-DFNT ♦ SLC Platform
User Manual EtherNet/IP Client/Server Communication Module
Page 142 of 177 ProSoft Technology, Inc.
October 12, 2010
Click OK to transfer the new value to the module. The following illustration shows
the updated item data window.
4.16.2 ControlLogix (CLX) Processor
In order to exchange data between a ControlLogix processor and the module, the
MSG instruction is used. There are two basic methods of data transfer supported
by the module when using the MSG instruction: Encapsulated PCCC messages
and CIP Data Table messages. Either method can be used, and the selection is
left to the application developer.
Encapsulated PCCC Messages
PLC5 and SLC5/05 processors containing an Ethernet interface use the
encapsulated PCCC message method. The module simulates these devices and
accepts both read and write commands. The following topics describe the
support for the read and write operations.
Encapsulated PCCC Write Message
Write commands transfer data from the ControlLogix processor to the module.
The following encapsulated PCCC commands are supported from a ControlLogix
Processor:
PLC2 Unprotected Write
PLC5 Typed Write
PLC5 Word Range Write
PLC Typed Write