188 CHAPTER 23 CLICK 301
Physical Features
e Click 301 has several communication ports, as well as features for conguration (see
Figure 23.2).
Figure 23.2 – Diagram of the Click 301
Communication Ports
e back of the Click 301 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.
e top of the device has a pluggable screw terminal block that features -485, one +485
and two ground screw terminals for wiring RS-485 communication. is screw terminal
block can be removed for easy preinstallation wiring. It will not be necessary to wire RS-485
through the screw terminal block if the device is connected to a T-bus with uninterrupted
RS-485 communication.
e front of the Click 301 features a DB-9 connector for RS-232 communication. A straight-
through cable can be used to connect from this port to a computer so that the device can
be congured using Click Supervisor. e front of the device also has an RJ-45 jack for
Ethernet communication.
Any data on one port will be transmitted simultaneously on all other ports.