Lutron Electronics RadioTouch RTA-RS232 Setup And Installation Manual page 19

Notes on Protocol
Command Set
General Command Structure
All commands are sent as ASCII characters. Numerical data fields are the ASCII representation of the decimal
value.
There should be no spaces between characters. Each command has a prefix, a limited number of fields, and an
end character. All commands from the Host device will have a prefix of a colon, :, and an end character of a
carriage return, <CR>. All responses from the RTA-RS232, except for the prompt, will have a prefix of a tilde, ~,
and end with a carriage return, <CR>. Each field is separated by a comma.
Command Format
:
,
Command
Parameters
Extended Parameters
<CR>
If your equipment does not support the transmission of ASCII characters, you will need to convert the messages
from ASCII to whatever form your equipment supports, i.e. hexadecimal. For example, to command the
RadioTouch RS-232 Interface to set zone one to preset one, the ASCII text command :PS,1,1<CR> is issued:
TM
ASCII : P
Hexadecimal 3A 50
:Command,[Parameters],{Extended Parameters}<CR>
Indicates start of command
Field Separator
Command as shown
Zone number or other parameters relevant to the command
Parameters that do not apply to all variations of a particular command
Carriage Return, ASCII character 13d – indicates end of command
S , 1 ,
53 2C 31 2C
1 <CR>
31 0D
RadioTouch Setup Guide for RTA-RS232
TM
19