Chapter 3 System Configuration
3-6
3.2.2 1:1 Dedicated modem connection with PC (HMI)
It is 1:1 communication system connected through dedicated modem through RS-232C channel
with PC (HMI). Normally, PC (HMI) acts as client station, Cnet I/F module acts as server station
which respond request of PC (HMI). Since it uses modem, RS-232C channel should be set as
dedicated modem and long distance communication is available. Operation mode of this module
should be set according to communication method of PC (HMI).
[Figure 3.2.4] dedicated modem communication with PC
Modem
Modem
XBL-C21A
XBM-DN32S
XBL-C21A
XBM-DN32S
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