Dfnt client x commands – ProSoft Technology MVI69-DFNT User Manual
Page 33

MVI69-DFNT ♦ CompactLogix or MicroLogix Platform
Configuring the MVI69-DFNT Module
EtherNet/IP Client/Server Communication Module
User Manual
ProSoft Technology, Inc.
Page 33 of 167
May 14, 2014
2.4
[DFNT Client x Commands]
This section defines the EtherNet/IP commands to be issued from the module to
server devices on the network. These commands can be used for data collection
and/or control of devices on the TCP/IP network.
2.4.1 Command List
In order to interface the virtual database with Rockwell Automation
Programmable Automation Controllers (PACs), Programmable Logic Controllers
(PLCs), or other EtherNet/IP server devices, you must construct a command list.
The commands in the list specify:
The message type to be utilized to access the server device
The registers in the module's virtual database to be used as the source of
data sent or destination of data received
The polling interval of each command
The number of data points to be read or written
The byte-order of the data, controlled by a swap code
The Ethernet IP address of the target server device
The chassis slot number of the target server device
The command and function code of the operation to be performed (read or
write)
The data area to access in the server device
There is a separate command list for each of the different message types
supported by the driver. Each list is processed from top to bottom, one after the
other, until all specified commands are completed, and then the polling process
begins over again.