170
CHAPTER 19
•
CLICK 222
Physical Features
The physical features of the Click 222 include communication and power connections.
LED Indicators
T-Bus
Connector
RS-485
Bridge
Connector
RS-485 B
Connector
RS-485 A
Connector
RS-485 Connector
RS-485 Connector
Power Connector
PWR
DC Surge
OK
TD
RD
Click! 222
System Surge
Protection
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RS-485 A
RS-485 B
RS-485 Bridge
Con
tr
ol
Da
ta
Da
ta
Figure 19.2 – Diagram of the Click 222
Connections
The faceplate of the Click 222 has three RJ-11 jacks, which provide the following three in-
dependent serial connections:
˽
Topmost jack –
control bridge
˽
Middle jack –
dedicated communications for sensor 2 detection calls
˽
Lowest jack –
dedicated communications for sensor 1 detection calls
The back of the Click 222 features a 5-position connector that plugs into a T-bus connector
and provides power and RS-485 communication to the device. It also passes RS-485 com-
munication from the module to all other devices on the T-bus.
The bottom of the Click 222 has three pluggable screw terminal blocks with four terminals
each, for a total of twelve connections. These terminals are used for wiring in the cable from
the sensor. The terminals have four different RS-485 connections, each consisting of a +485
and a -485 terminal; two of these connections are for detection calls and two for the con-
trol bridge, allowing two sensors to be wired in to each Click 222. This will be explained in
greater detail in the Installation section of this chapter.
Summary of Contents for Click 100
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