NEC X551UN P401 : RS232 codes for X461UN, X461HB, X431BT, P401, P461, P521, P5 - Page 1

External Control NEC LCD Monitor 1. Application This document defines the communications method for control of the NEC LCD monitor, MultiSync X461UN /X461HB /X431BT /P401 /P461 /P521 /P701 /S401 /S461 /S521 and MULTEOS M401 /M461 /M521 when using an external controller. 2. Connectors and wiring 2.1 RS-232C Remote control Connector: 9-pin D-Sub Cable: Cross (reversed) cable or null modem cable (Please refer "Controlling the LCD monitor via RS-232C Remote control" on User's manual.) 2.2 LAN control Connector: RJ-45 10/100 BASE-T Cable: Category 5 or higher LAN cable (Please refer "Controlling the LCD monitor via LAN control" on User's manual.) 3. Communication Parameter 3.1 RS-232C Remote control (1) Communication system (2) Interface (3) Baud rate (4) Data length (5) Parity (6) Stop bit (7) Communication code Asynchronous RS-232C 9600bps 8bits None 1 bit ASCII 3.2 LAN control (1) Communication system (2) Interface (3) Communication layer (4) IP address (5) Port No. TCP/IP (Internet protocol suite) Ethernet (CSMA/CD) Transport layer (TCP) * Using the payload of TCP segment. (Default) 192.168.0.10 * If you need to change, Please refer "Network settings" on User's manual. 7142 (Fixed) (Note) The monitor will disconnect the connection if no packet data is received for 15 minutes. And the controller (PC) has to re-connect to control the monitor again, after 15 minutes or more. 3.3 Communication timing The controller should wait for a packet interval before next command is sent. The packet interval needs to be longer than 600msec for the LCD monitor. (1/50)