Chapter 2 System Configuration
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2.4 Network System
XG series provides various network system for easy system configuration.
This provides Ethernet (FEnet, FDEnet) and Cnet for communication between PLC and upper system or
between PLCs and provides a dedicated Ethernet (FDEnet), Profibus-DP, DeviceNet, Rnet etc. as lower
control network system.
2.4.1 Network Systems
2.4.1.1 Local Network
It is available to install max. 24 communication module without any constraint of Main base and
Expanded base. It is recommended to install the module with lots of communication capacity in Main
base considering system operation and performance. The constraints per function are shown on the
table as below.
Classification per purpose
XGK-CPUE
XGK-CPUS
XGK-CPUA
XGK-CPUH
XGK-CPUU
No. of max. high speed link setting module
12
No. of max. P2P service module
8
No. of max. dedicated service module
24
*Note 1) P2P service : 1 : 1 communication
2.4.1.2 Computer Link (Cnet I/F ) System
Cnet I/F system is the system to carry out the data communication between computer or various
external equipment and CPU module by using RS-232C, RS-422 (or RS-485) port of Cnet module.
For further information of Cnet module, please refer to the user’s manual related to Cnet module.
As mentioned on the above “Local Network”, Cnet module is available to install max. 24 bases
(including other communication module) regardless Main base and Expanded base.
Cnet does not provide high speed link but supports P2P service up to 8.
