Detcon X40-32-N7 - Manual (Page 18)

Model X40
Model X40 Instruction Manual Rev. 3.3 Page 12 of 64
1.13 Wireless Option
The Model X40 controller offers a wireless option that uses Modbus™ technology to connect the controller
and other devices to a wireless platform. The local Modbus™ communication uses a wireless grid of
transceivers to broadcast information throughout the wireless network, creating a seamless network of
Modbus™ devices that are not physically connected. The transceiver operates at 2.4GHz and conforms to
non-licensed radio frequency usage worldwide.
Spread spectrum technology supports integrity and
security for the wireless network.
Wireless applications can be a single field device communicating with a host controller or multiple field
devices forming a network of subscribers. Each device in the network is assigned a Network ID and a
Modbus™ address. If radio communication is impossible due to distance or obstruction, each slave device
is capable of locating an alternate route using an additional radio to communicate with the designated
device. This innovative technology is designed to create a robust network that automatically routes around
congestion and line-of-sight obstacles while improving throughput as subscriber device density increases.
Refer to the Wireless Radio Module instruction manual for detailed information.
Wireless Radio Module Mounting
Detcon’s wireless radio modules are factory installed. The radio module has a rotary dial for setting the RF
channel. The radio module, wireless sensors, and wireless alarm stations must all be set to the same RF
channel to operate correctly.
NOTE
The radio module, wireless sensors, and wireless alarm stations must all be set to the same
RF channel to operate correctly.
Figure 5 Radio Module
For NEMA 1 or NEMA 12 units the antenna is typically mounted separately, using Detcon’s remote
antenna mounting kit. On NEMA 4 units the antenna can be installed on the top of the enclosure or
separated up to 50m using Detcon’s remote antenna mounting kit (Section 2.3). On N7 units the antenna is
mounted on the Transceiver, and is part of the unit (Section 2.4).
Detcon’s antennas are vertically
polarized. This means that there is an RF ‘Dead-Zone’ directly above and below any transmitting antenna.
Because of this, any device with an antenna that is located near an elevated antenna should be placed at
least as far from the elevated antenna as the antenna is high. For example, if an antenna is 20ft. off the
ground, the nearest antenna should be at least 20 ft. away.