Reference Guide

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Dell™ C7520QT External Control

1. Application

This document defines the communication method for control of the Dell LCD display C7520QT

when using an external controller.

2. Connectors and wiring

2.1 RS-232C Remote Access

Connector: 9-pin D-Sub

Cable: Straight cable or null modem cable

RS232 Pin Assignment (Facing Display)

This display uses RXD, TXD and GND lines for RS-232 control.

Note 1: The RS232 cable is not provided by Dell.

2.2 LAN control

Connector: RJ-45 10/100 BASE-T

Cable: Category 5 or higher LAN cable

RJ45

LAN cable

Note 2: The LAN cable is not provided by Dell

Summary of content (6 pages)

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Dell™ C7520QT External Control 1. Application This document defines the communication method for control of the Dell LCD display C7520QT when using an external controller. 2. Connectors and wiring 2.1 RS-232C Remote Access Connector: 9-pin D-Sub Cable: Straight cable or null modem cable RS232 Pin Assignment (Facing Display) This display uses RXD, TXD and GND lines for RS-232 control. Note 1: The RS232 cable is not provided by Dell. 2.
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3. Communication Parameter 3.1 RS-232C Remote access (1) Interface RS-232C (2) Baud rate 9600bps (3) Data length 8bits (4) Parity None (5) Stop bit 1 bit 3.2 LAN control (1) Communication system TCP/IP (Internet protocol suite) (2) Interface Ethernet (3) Communication layer Transport layer (TCP) Using the payload of TCP segment. (4) IP address If you need to change, Default: 10.0.50.100 Please refer “Dell Web Management for Displays” section on User’s manual. (5) Port No. 4661 (Fixed) 4.
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0 = Success 1 = Timeout 2 = Parameters Error 3 = Not connected 4 = Other Failure [Cmd] = Command [Data0]…[DataN] = Data0~N [Chk] = Check Sum Example: Get Display Name [From PC to Display] = 37, 51, 02, EB, 01, 8E [From Display to PC] = 6F, 37, 0F, 02, 00, 01, 44, 65, 6C, 6C, 20, 43, 37, 35, 32, 30, 51, 54, 13 CheckSum calculation Xor byte by byte from first byte to the end of the command data stream.
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5.
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GetColorPresetCaps GetColorPreset SetColorPreset - Standard SetColorPreset - ComfortView SetColorPreset - Custom SetColorPreset - Color Temp 37 37 37 37 37 37 51 51 51 51 51 51 02 02 06 06 06 06 EB EB EA EA EA EA 47 48 48 48 48 48 Custom color type (BYTE) SetCustomColor - Gain_RGB (100,100,10 0 - Gain R value (BYTE) - 0 - 100 SetCustomColor - Gain_RGB (50,50,50) G value (BYTE) - 0 - 100 B value (BYTE) - 0 - 100 SetCustomColor - Gain_RGB (0,0,0) 37 51 03 EB 49 37 51 06 EA 49 37 51 06 EA 49
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