8.1.1 Introduction
The dedicated communication service is reading and writing information and data of PLC from/on
PC and associated devices with the protocol built-in FEnet I/F module.
The FEnet I/F module operates as a server in the network and responds to memory Read/Write
request instruction with XGT dedicated protocol or MODBUS TCP protocol by Computer or
external devices. It uses 2004 and 2005 for TCP and UDP port number of XGT dedicated driver,
respectively and 502 for the port number of MODBUS TCP driver. This service mainly used to
communicate between higher level system (PC program, MMI) and LS Ethernet module or
between LS Ethernet modules.
(1) Setting of XGT dedicated driver
[Fig. 8.1.1] Driver setting screen
As basic parameters shall be surely specified and downloaded prior to use in the Ethernet
communication, the dedicated communication services shall be also surely specified and
downloaded for its application (XGT server if not specified).
The number of dedicated connections in the basic parameters is the number of channels (MMI
connections) connected through LS dedicated port (2004). Thus, by changing the number of
dedicated connections on the frame editor, the number of channel connections for LS dedicated
communication can be changed.
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