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RS-232 PROTOCOL & CODE TABLE
Protocol Specs Pin Connections
Baud Rate: 9600 bps TxD: Pin 2
Data Bit: 8 bits RxD: Pin 3
Stop Bit: 1 bit Gnd: Pin 5
Parity: None
Flow Control: No
Basic RS-232 Control:
ASCII (not decimal) and hexadecimal examples are shown below. The commas in the Hex
example are merely for your ease of reading and are not required in transmission. All strings must
have a space between each number or letter (except two digit numbers). In the Hex examples the
space is already represented with code “20.” The end of each string must have a carriage return
after the last number with no space in-between, this is represented by “<CR>” in the ASCII
examples and “0D” in the Hex examples.
Command String ASCII String Hexadecimal
Power On W 1 1 2<CR> 57,20,31,20,31,20,32,0D
Power Off W 1 1 1<CR> 57,20,31,20,31,20,31,0D
Power Toggle W 1 1 3<CR> 57,20,31,20,31,20,33,0D
Volume Up W 1 9 1<CR> 57,20,31,20,39,20,31,0D
Volume Down W 1 9 2<CR> 57,20,31,20,39,20,32,0D
Mute On W 1 10 2<CR> 57,20,31,20,31,30,20,32,0D
Mute Off W 1 10 1<CR> 57,20,31,20,31,30,20,31,0D
Mute Toggle W 1 10 3<CR> 57,20,31,20,31,30,20,33,0D
Input 1 W 1 2 6<CR> 57,20,31,20,32,20,36,0D
Input 2 W 1 2 7<CR> 57,20,31,20,32,20,37,0D
Input 3 W 1 2 8<CR> 57,20,31,20,32,20,38,0D
Input 4 W 1 2 9<CR> 57,20,31,20,32,20,39,0D
Input 5 W 1 2 10<CR> 57,20,31,20,32,20,31,30,0D
Input 6 W 1 2 11<CR> 57,20,31,20,32,20,31,31,0D
Input MP3 W 1 2 12<CR> 57,20,31,20,32,20,31,32,0D
Input Bypass W 1 2 13<CR> 57,20,31,20,32,20,31,33,0D
Next Input W 1 2 4<CR> 57,20,31,20,32,20,34,0D
Previous Input W 1 2 5<CR> 57,20,31,20,32,20,35,0D
Tone On W 1 3 1<CR> 57,20,31,20, 33,20,31,0D
Tone Off W 1 3 2<CR> 57,20,31,20, 33,20,32,0D
Tone Toggle W 1 3 3<CR> 57,20,31,20, 33,20,33,0D
Please Note: ”<CR>” stands for Carriage Return and the Hex Code is “0D”.
A space in Hex is “20”, a space in ASCII is just a blank space (as shown above).