XI/ON: XN-1RS232 09/2011 MN05002013Z-EN www.eaton.com 191 Product DescriptionBase modulesConnection diagramFigure 4: Wiring diagram for XN-S4x-SBBS andsubmin D plug (top view)Table 4: Assignment of signals for a 9-pole submin Dplug2423222114131211TxDRxDGNDSHLDRTSCTSPin No. Signal designation1 DCD Data Carrier Detect2 RxD Receive Data3 TxD Transmit Data4 DTR Data Terminal Ready5 GND Ground6 DSR Data Set Ready7 RTS Request To Send8 CTS Clear To Send9 RI Ring Indicator→ The table rows highlighted in grey indicatesignals that are also available at the terminals ofthe base module.

Eaton XN-1RS232 User Manual