Dell S520 RS232 Protocol Document
Summary
Dell S520 RS232 Protocol Document for serial control of S520 projectors. Defines pin assignments, communication settings at 19200 bps, command syntax with header, CRC16, and command codes for power control and input selection. Target users are AV integrators and control system programmers.
Page 1 Text Content
Dell™ S520 RS232 Protocol Document RS232 Projector Pin Assignment (Facing Projector)
RS232 Serial Communication Cable Pin Assignment (Facing Cable)
Pin Assignments
RS232 PIN DESCRIPTION RS232
2 TXD 3 3 RXD 2
5 GROUND 5
7 Not Used 7 8 Not Used 8
Note 1: The RS232 (pin2-3 swap) cable is not provided by Dell.
RS232 Protocol Communication Settings
Connection Settings Value Baud Rate 19200 bps Data Bits 8 bits Parity None Stop Bits 1 bit Flow control None
Command Types To display the OSD menu and adjust the settings.
Page Summary Contents For Dell S520 RS232 Protocol Document
Manual Details
| Brand | Dell |
|---|---|
| Pages | 5 |
| File Size | 554.03 KB |
| Published | June 26, 2026 |
Enter the captcha to get the download link:
Frequently Asked Questions
What are the communication settings for RS232 control?
Set baud rate to 19200 bps, 8 data bits, no parity, 1 stop bit, and no flow control.
How do I connect the RS232 cable for the projector?
Connect TXD (pin 2) to RXD (pin 3) and GROUND (pin 5) to GROUND. The cable is not provided by Dell.
How long should I wait after turning on the projector before sending commands?
Wait for 5 seconds after power on before sending the next command.
What is the command structure for controlling the projector?
The syntax is [H][AC][SoP][CRC][ID][SoM][COMMAND] or [COMMAND][Value], starting with the low byte first.