SE-500MU RS-232 Command String Examples for Serial Control – Datavideo

The SE-500MU supports RS-232 serial control but sometimes there is some confusion on how to setup the command strings. We placed some command string examples and additional information required to setup serial control with the SE-500MU.

RS-323 PINOUTS
Let’s start with the serial pin definition on the SE-500MU for RS-232:
The 9 pin D-SUB connector has the following pinouts:

There are 4 pins for GND (Pin 1, 5, 6, 9), it is ok to connect Pin 5 only for ground.

    Pin 1 : GND
    Pin 2 : TXD *
    Pin 3 : RXD *
    Pin 4 : N/C
    Pin 5 : GND *
    Pin 6 : GND
    Pin 7 : N/C
    Pin 8 : N/C
    Pin 9 : GND
    * It is ok to connect only 3 Pins for RS-232 applications.

SERIAL INTEFACE FORMAT

RS-232
Baud rate: 115200
Data bit: 8bit
Stop Bit: 1bit
Parity: no parity

STRING STRUCTURE

Here are a few command string examples:
Switch to input 1: 04 00 C1 01 C6

Switch to input 2: 04 00 C1 02 C7

Select Preview Key to input 1: 04 00 C2 01 C7

Select Preview Key to input 2: 04 00 C2 02 C8

Auto transition: 04 00 C6 00 CA

Cut transition: 04 00 C6 01 CB

The RS-232 protocol document found below will provide a more detailed explanation of the commands and required structure.

Useful Links:

RS-232 Protocol

RealTerm Serial Capture Tool