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Control Unit
There are various designs for the Control Units. They differ primarily in terms of different field bus inter-
faces. This tutorial will use the example of the CU230P-2 HVAC / BT Control Unit. It offers Modbus RTU,
BACnet MS / TP and USS as field bus interfaces.
Always use the CU screening kit in
order to ensure optimal potential
equalization, fixing and screening
of all bus- and signal cables.
NOTE
Rating plate
DIP switch for analog inputs
DIP switch for fieldbus address
Interface for the Operator
Panel (BOP-2 or IOP-2)
Status LEDs
Terminals for digital and
analog inputs and outputs
USB interface for STARTER
Interface to the Power Module
Fastening clips
RS485 connector for Fieldbus
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