1-Wire interface
BBO gateways use 1-Wire interface to communicate with the sensors and interfaces.
1-Wire interface has +5V, GND and 1-Wire data lines.
There are typically 4 pins with the following markings and functions:
OW
1-Wire data
GND
Power ground
GND
Power ground
PWR
Power supply +5V
The GND pins are shorted together in the module.
+5V and GND supply sensors and interfaces, 1 Wire is a common communication line. These lines are connected in parallel to all the units using the interface.
Every 1-Wire bus is controlled by a single 1-Wire master that communicates with multiple 1-Wire slave modules like sensors and interfaces.
In BBO installation, BBO gateway is a 1-Wire master.
The 1-Wire interfaces’ connectors have duplicated all three interface lines to enable easy pass-through connection. Using this method provides a simple way to connect remote groups of sensors using a single 1-Wire cable.
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