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WX-501-0537 • 01.22
T-Bus
Connector
RS-232
Connector
RS-485
Connector
RS-232
Connector
RS-485
Connector
LED Indicators
Mode
Switch
Inputs
Connector
Outputs
Connector
DIP Switches
TOP
FRONT
Communication Ports
The Click 512 provides four communication ports:
■
RS-485 T-bus connection port
■
RS-232 front DB-9 connection port
■
RS-232 top screw terminal connection port
■
RS-485 top screw terminal connection / front RJ-11 jack connection port
The back of the Click 512 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 communication to all other devices on the T-bus.
Usually, the RS-485 T-bus connection port is the primary connection to the SmartSensor HD.
The RS-232 DB-9 port on the front of the module is used when interacting with a computer, using Click Supervisor
or a serial terminal program like HyperTerminal.
Note.
With older versions of the Click 500 series module, it is necessary to remove pin 4 from the serial cable to
prevent the device from going into Program mode. If it enters Program mode, all of the faceplate LEDs will turn
off, and you’ll need to power cycle the device.
The other two communication ports can be accessed via the screw terminal blocks on the top of the device.
However, in many Click 512 applications these ports are unused. The first block has -485, +485 and two ground
screw terminals for wiring RS-485 communication. These ports are used to talk to a Click 112 or 114. The RS-485
communication lines of this block are physically connected to the RJ-11 jack on the front of the module, so a
connection can be made with the RJ-11 jack or by wiring the RS-485. The second block has a -232, +232 and two
ground screw terminals for wiring RS-232 communication.
Note.
The Click 512 communicates over the RS-485 T-bus to SmartSensor HD at baud rates between 9600 bps
(default) and 115200 bps. Communication to Click Supervisor is done via the RS-232 front port (Device Setup
Mode) or RS-232 top port (Run Mode) at 9600 bps. Data forwarding is done via the RS-232 front port (Run Mode)
at 9600 bps. Communication to a Click 104/112/114 is done via the RS-485 top/front port at 9600 bps.
