Com 1-4 - Elan SS1 Installation Manual

SS1 System Station

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 device to be controlled, as shown in Figure 4.30. Consult
Figure 4.31 for pinout positions.
NOTE: COM1 and COM2 have male pins. COM3 and COM4 have female pins. It is neces-
sary to use a null modem gender changer if the RX/TX are reversed on a particular product.
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INSTALLATION MANUAL
To RS-232
Device #1
To RS-232
Device #3
Figure 4.30 - COM Port Connections
COM 1-2 (Male)
RX TX
1
2 3 4
6 8
7
Figure 4.31 - COM Port Connections
To RS-232
Device #2
DB-9
Serial
Cables
COM 1 COM 2
COM 3 COM 4
DB-9
Serial
Cables
To RS-232
Device #4
GND
5
9
© ELAN Home Systems 2007 • All rights reserved.
E L A N H O M E S Y S T E M S
SS1
COM 1
COM 2
COM 3
COM 4
COM 3-4 (Female)
TX RX
1 2 4
3
6
7 8
GND
5
9