PTI Security Systems
Wireless RS485 Installation and Troubleshooting Instructions
4/8/14
Rev A
Page 2 of 4
modems with PayXpress regardless of the location of the PayXpress terminal on the
RS-‐485 network.
Set Up
1.
The Wireless RS-‐485 modems are powered using the supplied power transformers.
2.
Connection to the RS-‐485 network is made using the supplied cables.
a.
Data Positive = Red
b.
Data Negative = Black
c.
Shield = Bare
3.
For antenna installation see the supplied instruction manual or the PTI Security
Web Quick Docs Section.
4.
Before plugging power into the modem, set all DIP switches to the OFF position
(down) as shown below.
5.
If using a Falcon XT, change the Poll Timeout setting in the Setup Falcon XT
Advanced Settings screen to a value of 200. This is important for proper operation.
Testing and Troubleshooting
Step 1 -‐ Check for Interfering systems
This step should be performed first, prior to connecting to the access control system.
While at the installation site, connect the antenna and power to the modem. Do not
connect the modem to the RS-‐485 network at this time. Observe the three green RSSI LEDs.
These LEDs indicate the signal strength of the received signal. Since we only have one
modem on, all LEDS should be off. If any are lit there will be interference from a nearby
system. If this is the case, a custom configuration is required in order to change the
addressing of the modem. The simplest solution is to change the hopping channel or VID.
See the “Addressing” section of the XTend Product Manual on the Digi International Web
site. Note that if changing the hopping channel or VID, it must be set the same on both
modems.
Repeat this step at both Modem installation sites.
Step 2 – Connect the Modem to the Controller RS-‐485 Network
Connect the modem to the RS-‐485 network on the controller (Falcon Base Unit, Syscon or
XT). Connect the antenna and power to the modem. The RSSI LEDS should be off; the
GREEN Data-‐In LED should be flashing indicating that the modem is successfully receiving
data from the controller. If the Data-‐In LED is not flashing check your connections to the
