ProSoft Technology 5204-DFNT-PDPMV1 - Manual (Page 19)

DFNT ♦ ProLinx Gateway Functional Overview
EtherNet/IP Explicit Messaging Client/Server Protocol Manual
ProSoft Technology, Inc. Page 19 of 124
July 24, 2013
2.2.2 Module Internal Database
The internal database is central to the functionality of the module. This database
is shared between all the ports on the module and is used as a conduit to pass
information from one device on one network to one or more devices on either
connected network. This permits data from devices on one communication port
or network to be viewed and controlled by devices on another port or network.
In addition to data from the Master and ports, status and error
information generated by the module can also be mapped into the internal
database.
2.2.3 DFNT EtherNet/IP Client Access to Database
The client functionality places data from the DFNT module automatically in data
tables established in ControlLogix, PLC5 and SLC 5/05 processors. The
command list defined in the user configuration defines what data is to be
transferred between the module and one of the processors. No ladder logic is
required in the processor for client functionality.
The following diagram describes the flow of data between the Ethernet clients
and the internal database.