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External Control NEC LCD Monitor
1. Application
This document defines the communications method for control of the NEC LCD monitor, MultiSync
LCD4020/4620/5220/6520 and MULTEOS M40/46 when using an external controller
.
2. Connectors and wiring
Connector: D-Sub 9-pin
Cable: Cross (reversed) cable or null modem cable
(Please refer “Using the LCD with RS-232C” on each User’s manual.)
3. Communication Parameter
(1) Communication system Asynchronous
(2) Interface RS-232C
(3) Baud rate 9600bps
(4) Data length 8bits
(5) Parity None
(6) Stop bit 1 bit
(7) Communication code ASCII
3.1 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.