LNGS.465213.270-10 OM
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length of the CAN bus of the lift unit 7.2 can be up to 350 m. Topology is a bus allowing to connect branches in 10-15
meters. Max number of devices can be connected is 64. On necessity to increase CAN bus length, a CAN bridge
extender should be used. To ensure non-volatility of devices connected to the CAN bus and not having a built-in
battery, a non-volatile power supply must be used instead of a network adapter.
To coordinate the load on the CAN bus on the end devices, you must connect the 120 Ohm resistor with special
jumpers.
Wi-Fi interface
The Lift Unit 7.2 has got a built-in Wi-Fi module (standard 802.11 b / g / n), which can be used for connecting to the
Internet using a wireless Wi-Fi connection (as an alternative to a LAN Internet connection). Additionally, the Wi-Fi
module can work as an access point for creating an internal network. The internal network is designed to connect
intercom units 7.2 via a Wi-Fi network. The identifier (SSID) of the internal Wi-Fi network is set by the manufacturer
and does not change. When configuring the internal Wi-Fi network, you must specify both the network password and
the channel number
.
Intercom unit connectivity
The Intercom unit can be connected via CAN bus or Wi-Fi.
To work on the CAN bus the 4-wired connection should be made (CAN-P, CAN-L, CAN-H, CAN-G).
To balance the load on the CAN bus, bus terminators of 120Ohm resistor need to be connected. "Terminator" is
connected using a special jumper "TRM" only on those device that is located at the ends of the CAN bus.
On necessity of using intercom units 7.2 connected via Wi-Fi, each Intercom unit must be prewired to the configured
LU via CAN bus, for tr
aining and “binding”.
A cable like shown on Fig.7 can be used for the purpose.
Fig.7 CAN cable example
When the training and binding process is over the “Wi-Fi” LED on Intercom unit starts lighting green.
