Chapter 2 System Configuration
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2.4.1 Cnet I/F system
Cnet I/F System is used for communication between the main unit and external devices using RS-
232C/RS-422 (485) Interface. The XGB series has a built-in RS-232C port, RS-485 port
For “E” type, only one communication port between RS-232C and RS-485 can be used and you can
specify at parameter setting window. For “S” type, RS-232C and RS-485 can be used independently
and add RS-232C dedicated Cnet I/F module (XBL-C21A) and RS-422/485 dedicated Cnet I/F module
(XBL-C41A). It is possible to configure the following communication system on demand
(1) 1:1 communication system
(a) 1:1 communication of an external device (computer) with main unit using a built-in port
(RS-232C/RS-485)
(b) 1:1 communication with main unit using a built-in RS-485 port
(In case of built-in RS-232C,it is for connecting to HMI device.)
Built-in RS-232C Connection
Built-in RS-485 Connection
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