36External Controlplasma monitor External equipmente.g., Personal computer1) Connector on the plasma monitor side: EXTERNALCONTROL connector.Type of connector: D-Sub 9-pin maleNo. Pin Name1 No Connection2 RXD (Receive data)3 TXD (Transmit data)4 DTR (DTE side ready)5 GND6 DSR (DCE side ready)7 RTS (Ready to send)8 CTS (Clear to send)9 No ConnectionApplicationThese specifications cover the communications control ofthe plasma monitor by external equipment.ConnectionsConnections are made as described below.2) Connector on the external equipment side: Serial port(RS-232C) connectorSee the specifications of the equipment that is to beconnected for the type of connector and the pinassignment.3) WiringUse a crossed (reverse) cable.Wire the cable so that each pair of data lines crossbetween the two devices. These data line pairs are RXD(Receive data) and TXD (Transmit data), DTR (DTEside ready) and DSR (DCE side ready), and RTS (Readyto send) and CTS (Clear to send).Communication Parameters(1) Communication system Asynchronous(2) Interface RS-232C(3) Baud rate 9600 bps(4) Data length 8 bits(5) Parity Odd(6) Stop bit 1 bit(7) Communication code Hex1596
