
Mountingandwiring
3.10 RS232connections(CX9020N030)
TheCX9020N030systeminterfaceprovidesanRS232interface,COM1(X300).Itisimplementedona9
poleSubDpinstrip.IfmorethanoneinterfaceisrequiredthesystemcanbeextendedviatheTerminalBus
(KorEbus)orBusTerminals(KL/EL6001)whichprovideserialinterfaces.Thepinassignmentisshownat
thebottomofthepage.
Themaximumbaudrateonbothchannelsis115kbit.Theinterfaceparametersaresetviatheoperating
systemorfromthePLCprogram.
RS232COMinterface(connector)
Table4:PinassignmentoftheCOMinterface
PIN Signal Type Description
2 RxD Signalin ReceiveData
3 TxD Signalout TransmitData
5 GND Ground Ground
7 RTS Signalout ReadytoSend
8 CTS Signalin CleartoSend
CX902028 Version1.1
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