Com 1-4 - Elan SS1 Installation Manual

E L A N H O M E S Y S T E M S

COM 1-4

The COM 1-4 ports are designed to control external RS-232 devices such as Lighting,
HVAC, and Security systems. Connect DB-9 serial cables or Cat-5 with DB-9 connectors
between the VIA2-SS1 and the PSS1 as shown. Figure 4.17 shows pinout positions of the
COM ports.
Note: COM1 and COM2 are male connectors. COM3 and COM4 are female connectors. It
is necessary to use a null modem gender changer if the RX/TX are reversed on a particular
product.
SS1
COM 1
COM 3
DB-9 to DB-9
Serial Cable
PSS1-Front
© ELAN Home Systems 2007 • All rights reserved.
COM 2
COM 1
COM 2
COM 3
COM 4
COM 4
Figure 4.17 - COM1-4 Connections
SS1 System Station
SS1 COM 1-2 (Male) SS1 COM 3-4 (Female)
TX RX
RX TX GND
1 2
1 2 3 4 5
6
6 7 8 9 7
PSS1-Rear
G
22 GA Shielded
To RS-232
4 Conductor
Controlled
Wire (or similar)
Device
DB-9
Connector
INSTALLATION MANUAL
GND
3 4 5
8
9
G
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