NEC PX-42VM2A 42MP2 - Page 43

External Control Application These specifications cover the communications control of the plasma monitor by external equipment. Connections Connections are made as described below. plasma monitor External equipment e.g., Personal computer Communication Parameters (1) Communication system (2) Interface (3) Baud rate (4) Data length (5) Parity (6) Stop bit (7) Communication code Asynchronous RS-232C 9600 bps 8 bits Odd 1 bit Hex 1) Connector on the plasma monitor side: EXTERNAL CONTROL connector. Type of connector: D-Sub 9-pin male No. Pin Name 1 No Connection 2 RXD (Receive data) 3 TXD (Transmit data) 4 DTR (DTE side ready) 5 GND 6 DSR (DCE side ready) 7 RTS (Ready to send) 8 CTS (Clear to send) 9 No Connection 1 5 9 6 2) Connector on the external equipment side: Serial port (RS-232C) connector See the specifications of the equipment that is to be connected for the type of connector and the pin assignment. 3) Wiring Use a crossed (reverse) cable. Wire the cable so that each pair of data lines cross between the two devices. These data line pairs are RXD (Receive data) and TXD (Transmit data), DTR (DTE side ready) and DSR (DCE side ready), and RTS (Ready to send) and CTS (Clear to send). 36