Chapter 3 System Configuration
3-3
3.2 Available System Configuration
Communication system by using XGB built-in communication function and Cnet module is diverse. In this
chapter, it describes system configuration example.
.
3.2.1 1:1 Connection between PC (HMI) (No modem)
PC (HMI) and Cnet I/F module is connected by RS-232C or RS-422/485 channel, PC (HMI) and PLC is
connected by 1:1 without modem. In most case, PC (HMI) acts as client and Cnet I/F module acts as server which
respond request of PC (HMI). Since there is no modem, in case of using RS-232C channel, communication
distance is max 15m, in case of using RS-422 channel, communication distance is max 500m. Operation mode of
Cnet I/F module is set according to PC (HMI)’s communication method. Wiring method and system connection is
applied in case of XGB “S” type built-in communication. In case of using XGB “H” type and external
communication module, refer to 10.5 communication interface connection method.
(1) In case of using 1:1 connection with normal PC
Wiring method
External form of
PC
PC
Connection number and signal
direction
XGB main unit
XGB external
form
Pin no. Pin no.
Signal
name
1
1 485-
2
(RXD)
2
485+
3(TXD) 3 SG
4 4 TX
5(GND) 5 RX
6
7
8
9
In case of using channel 2, connect 485+ and 485- of RS485 terminal.
[Figure 3.2.1] 1:1 communication with PC
XGB main unit built-in
communication
1
2
3
4
5
Female Type
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