ProSoft Technology MVI69-DFNT - Manual (Page 100)

Reference MVI69-DFNT ♦ CompactLogix or MicroLogix Platform
User Manual EtherNet/IP Client/Server Communication Module
Page 100 of 167 ProSoft Technology, Inc.
May 14, 2014
The DFNT module supports server functionality using the reserved ControlNet
service port 0xAF12. Services supported in the module permit client applications
(that is, RSView, ControlLogix processors, and RSLinx) to read from and write to
the module’s database. This section discusses the requirements for attaching to
the module using several client applications.
The following illustration shows the relationship of the DFNT module’s
functionality to devices on an Ethernet network:
Client Server
RSSql
RSLinx
ControlLogix
Processor
PLC5
Processor
SLC5/05
Processor
DDE/OP C
Apps
RSView
SoftLogix
DFNT MODULE
DB
Server functionality places all data transfer operations outside the module. There
is no configuration required in the module other than setting up the network and
database parameters in the configuration file. Ladder logic in attached
processors use MSG instructions to perform read and write operations on the
module’s internal database. When RSLinx links a user application to the module,
the module’s server functionality must be used. RSLinx exists on an Ethernet
network only as a client application. It cannot act as a server. User applications
can use the DDE/OPC capabilities built into RSLinx to interface with the data in
the DFNT module. RSView can link directly to the module using drivers supplied
by RSLinx.