ProSoft Technology MVI71-DFNT - Manual (Page 147)

MVI71-DFNT ♦ PLC 5 Reference
EtherNet/IP Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 147 of 175
February 3, 2011
Verify that the CIP radio-button is selected as the C OMMUNICATION M ETHOD . The
P ATH specifies the message route from the ControlLogix processor to the DFNT
module. Path elements are separated by commas. In the example path shown,
the first element is "Enet", which is the user-defined name given to the 1756-
ENET module in the chassis (you could substitute the slot number of the ENET
module for the name), the second element, "2", represents the Ethernet port on
the 1756-ENET module, and the last element of the path, "192.168.0.75", is the
IP address of the DFNT module, the target for the message.
More complex paths are possible if routing to other networks using multiple 1756-
ENET modules and racks. Refer to the Rockwell Automation Support
Knowledgebase for more information on Ethernet routing and path definitions.
This method of data transfer uses CIP messages to transfer data between the
ControlLogix processor and the module. Tag names define the elements to be
transferred. The following topics describe the support for the read and write
operations.
CIP Data Table Operations
CIP Data Table Write
CIP data table write messages transfer data from the ControlLogix processor to
the DFNT module. An example rung used to execute a write command is shown
in the following diagram: