4 Troubleshooting Problems on Your DX70 Network
No LEDs. Recheck the power connections and power requirements. DX70 devices require 10 to 30V dc.
Signal LED is solid red or flashing red for more than 30 seconds. If the devices are less than two meters apart, they
may not communicate properly (radios may saturate). The devices may be too far apart to achieve sync – consult factory
for options.
Collocated Networks. To prevent interference between collocated networks, assign each wireless network a different
Network ID.
4.1 Radio Link Timeout and Recovery
The DX70 wireless devices employ a deterministic link timeout method to address radio link interruption or failure. As soon
as a specific RF link fails, all pertinent wired outputs are brought to a predefined state until the link is recovered (default
DIP switch setting).
Through this process, users of Banner wireless networks can be assured that disruptions in the communications link result
in predictable system behavior.
The link time-out feature uses a fully-acknowledged polling method to determine the RF link status of each device on the
network. If after a specified number of sequential polling cycles a device does not acknowledge a message, the devices
consider the link to be timed out. After a link has timed out, the units must send and receive a specified number of
communications packets before the link is reinstated. Outputs are restored to current values when the link is recovered.
The lost link option is available only on the DX70K*M6EM1 kits.
Link Loss = 1
OUT 2 = 0
.
.
OUT N = 0
Link Loss = 1
OUT 2 = 0
.
.
OUT N = 0
X
The radio link between the devices has timed out. In this example, the lost link is energized and the outputs have been
programmed by the DIP switches to go to their de-energized states (default DIP switch position).
Link Loss = 0
OUT 2 = Normal
.
.
OUT N = Normal
Link Loss = 0
OUT 2 = Normal
.
.
OUT N = Normal
The radio link between the devices has recovered and the outputs return to their current states.
A wireless network can be hindered by radio interference and by obstructions in the path of the receiver and transmitter.
To achieve the best radio performance possible, carefully consider the installation locations for all devices. The need for a
clear path increases as the transmission distance increases.
4.2 Collocated Networks
To prevent interference between collocated wireless networks, assign each wireless network a different Network ID. The
Network ID is a unique identifier assigned to each wireless network using the rotary dials on the Gateway.
Sure Cross
®
DX70 Wireless Point-to-Point Kits
18
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