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Communication ports – Wavetronix Click 400 (900 MHz radio) (CLK-400) - User Guide User Manual

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CHAPTER 7 CLICK 101

Figure 7.4 – Diagram of the Click 101

Communication Ports

The back of the Click 101 features a 5-position connector that plugs into a T-bus connector

and provides DC power and half-duplex RS-485 communication to the device. The RS-485

communication port on the T-bus allows the Click 101 to serve as the polling master on a

multi-drop RS-485 bus. The sensors act as clients on the RS-485 bus, only responding to

requests from the Click 101. Any devices connected to the T-bus will also have connectivity

over the shared RS-485 lines; however, when a Click 101 is being used, it is expected that

none of the sensors or other devices on the bus will push data. This will help avoid com-

munication message collisions on the RS-485 bus.

Note

It is recommended that the sensors not be connected to the T-bus while program-
ming this device with Click Supervisor.

The front of the Click 101 features a DB-9 connector for RS-232 communication. This con-

nector is used for device configuration using Click Supervisor. A straight-through cable can

be used to connect from this port to a computer.

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