Protocol; General Notes - Lutron Radio Touch RTA-RS232 Guide D'installation Et De Mise En Service

Protocol

General Notes

This section describes the commands available to
control a RadioTouch system via the RadioTouch
RS232 interface, model number RTA-RS232.
Communication Settings
To configure your device to talk to the RadioTouch
RTA-RS232 interface, use the data conventions
listed below.
9600 BAUD
8 Data Bits
1 Stop Bit
No Parity
For definition purposes, the host is considered the
Data Terminal Equipment (DTE) and the RTA-
RS232 is considered the Data Communications
Equipment (DCE).
Typical Interface Wiring
The RTA-RS232 is designed to accept a standard
9-pin serial cable to interface to the host. The RTA-
RS232 also includes an adapter that allows
terminal block connections to the RTA-RS232.
This adapter is for use with software flow control or
no flow control only. The following table describes
each connection scheme.
Pin Name Description
DCD Data carrier detect (not used)
RX Host data in/RTA-RS232 data out
TX Host data out/RTA-RS232 data in
DTR Data terminal ready
GND Ground/Common
DSR Data set ready
RTS Request to send
CTS Clear to send
RI Ring indicator (not used)
R
5 4 3 2 1
9 8 7 6
Female DB-9
pinout for RS232
interface
DB-9 Serial Cable
Pin Connection
1
2
3
4
5
6
7
8
9
RadioTouch RTA-RS232 Programming and Operation Guide
TM
1 2 3
Terminal block
connections for
RS232 interface
RTA-RS232
Terminal Block
Connection
-
3
2
-
1
-
-
-
-
9