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SB-4144 INSTRUCTION & OPERATION MANUAL
RS-232 SERIAL INTERFACE
RS232
The
Meicheng
switcher can be controlled via the RS-232 serial control port to allow for interfacing to a PC,
The serial communication parameters are 9600 baud, 8 bit, No Parity and 1 stop bit - this is often referred to as 9600 8N1.
When the unit recognises a complete command it will perform the requested action - there is no delimiter character required.
The unit does not send out a message when a value is changed from the front panel or by IR control. If the unit needs to be
controlled via the front panel in addition to the RS232 control, you should regularly poll the unit status to ensure the control system
accurately reflectes the current settings.
PROTOCOL COMMANDS
To Switch Inputs to Outputs
- Where X is Output Number (1-4) and Y is
Number (1-4)
Unit will respond with
SBUD0XOY
- Where X is Output Number (1-4) and Y is
Input Number (1-4)
Example : Send Input 4 to Output 2
-Send
SBUD04O2
-Rcvd
or similar third party control system.
SBI04O02
SBI0XO0Y
RS-232 SERIAL INTERFACE CONNECT a PC or CONTROL SYSTEM
1
5
6
9
RS-232 SERIAL INTERFACE
Pin RS-232 Definition
1 ------ Not used
2 TX Transmitter
3 RX Receiver
4 ------ Not used
5 GND Ground
6 ------ Not used
7 ------ Not used
8 ------ Not used
9 ------ Not used
