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:
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.
Switch 1: OFF = less than 100 doors; ON = more than 100
Switch 2: OFF = 9600 Baud communication; ON = 1200 baud
Switch 3: OFF = normal operation; ON = PTI test mode
Switch 4: OFF = high comm line impedance; ON = low
Figure Fifteen
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