SmartSensor HD - Interprovincial Traffic Services

30 CHAPTER 2 • CONNECTING POWER AND SURGEbox, and you want to access that sensor from a main traffic cabinet or from the traffic operationscenter, you will need some kind of communication between the two spots: either withthe homerun cable, which can carry both RS-232 and RS-485 communications, or by usinga Wavetronix Click communication device.Wavetronix has a variety of wired and wireless communication devices, such as the Click301 serial to Ethernet converter, which lets you communicate with the sensor via Ethernet,or the Click 400, which is a 900 MHz radio that communicates wirelessly with otherradios. See the Click Catalog, Click Series User Guide, or ITS Designer Training Guidefor more information.The Click 200 has several ports for other methods of communication. The faceplate has aDB-9 port you could connect to for RS-232 communication. There are also several RS-485connections:˽˽˽˽T-bus backplane: puts RS-485 on the T-bus. Because the Click 200 is connected tothe sensor, this T-bus connection means the sensor, the Click 200, and any other deviceon the T-bus all communicate with each other.RJ-11 connector on the faceplate for connecting to contact closure devices, if desired.NoteThe Click 200 does not convert RS-232 communication to RS-485. It simply providessurge protection for these two independent connections.