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5. External connections5.5 Serial interfaces for communication with PLCs or devices5.5 Serial interfaces for communication with PLCs or devices5.5.1 COM1 RS-232The RS232- interface is not electrically isolated.CAUTIONNON-GALVANICALLY-ISOLATED INTERFACESThe XV300 may be damaged by potential differences.The GND terminals of all bus modules must be connected.Do not connect the connector to the XV300 or disconnect it withoutfirst de-energizing the system.SUB-D plug PIN signal Meaning9 pole123456987 1 DCD Data Carrier Detect2 RXD Receive Data3 TXD Transmit Data4 DTR Data Terminal Ready5 GND Signal Ground6 DSR Data Set Ready7 RTS Request to Send8 CTS Clear To Send9 RI Ring IndicatorPlug housings GND Functional earthingTable 14: Pin assignment COM1 RS-232, not galvanically isolated, SUB-D plug 9-pole, UNC nuts for interlocking5.5.1.1 Wiringl Shielded cables must be used.l The maximal baud rate depends on the cable lengthLead Length Max. baud rate2.5 m 115200 Bit/s5 meters 57600 Bit/s10 metres 38400 Bit/s15 m 19200 Bit/s30 m 9600 Bit/sTable 15: RS-232 cable length based on baud rateWhen preparing connections, ensure that the cable shield has a lowimpedance connection with the connector housing.XV300 04/19 MN048017EN www.eaton.eu 61 |
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