UNIVERSAL RTS INTERFACE II
Operating Instructions
The addressable Universal RTS Interface II (URTSI II) can be used to communicate
between home automation or other third party systems and SOMFY’s RTS Motors and
controls. It is capable of individual or group control, and can be operated via infrared
remote, RS232 and RS485 serial communication. Once an input is activated, an RTS
radio command is sent to the automated window treatment.
DESCRIPTION
CONNECTION DIAGRAM
Back of Interface control box
Antenna
IR Sensor Input
RS232 Input
or RS485 Input
RS485 Input/Output
Power
Front of Interface control box
F
0
E
D
C
B
A
9
6
8
7
5
3
4
1
2
UP Button
STOP Button
Power/Transmit LED
URTSI Address or
RTS Channel
Rotary Switch
Program Button
DOWN Button
Part Number: 1810872
* As an option, power to the URTSI II can be
supplied on leads 4 & 5. In this case, the
plug-in transformer is not needed. In addition,
the power can be daisy-chained to the next
URTSI II over the CAT5 cable. The power
supply should be sized based on the number
of Interfaces on the network segment.
NOTE: Do Not remove antenna.
If a new antenna is needed, it
must be ordered from Somfy to
ensure FCC requirements are
maintained.
Pin 8
Pin 1
RS232/RS485 Pin-Out
(Shown Tab-side Down)
RS485 A (+)
Common
RS485 B (-)
RS232 RX
RS232 TX
Bus Power*
Common
Bus Power*
To RS232 TX
To RS232 RX
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