PTI Falcon Installation And Operation Manual page 24

of three will require the bottom red rotary switch to be set to zero and the one above it to
three .
Set the remaining DIP switches as summarized in the following table:
Switch 1: OFF = less than 100 doors;
Switch 2: OFF = 9600 Baud communication;
Switch 3: OFF = normal operation;
Switch 4: OFF = high comm line impedance;
The PTI Falcon communicates at 1200 baud, so DIP switch Two must be set to the ON
position before applying power to the mux box. Switch Three should always be set OFF .
Switch Four should be set ON if the box is the last device on the RS485 communication
wire, otherwise it should be set OFF .
Install the communication and power wiring to the mux boxes. Communications and 12
VAC power may be run through the same cable if a cable with two individually shielded
twisted pairs is used. 22 AWG is sufficient wire gauge for most applications. Figure
Fifteen illustrates a typical hookup for power and communication wiring.
Figure Fifteen
16
ON = more than 100
ON = 1200 baud
ON = PTI test mode
ON = low