Data Bus / Bus Communication / Room Controllers; The Data Bus System; Data Bus Addresses - Rotex Controller Series Product Documentation

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Data bus / Bus Communication / Room controllers

9.1

The data bus system

Function: The controllers THETA can be connected by a data bus. This enables
• controlling further heating circuits by adding up to four additional standard units
• connecting room sensors and remote units to the standard units and assigning
• cascading multiple heat generators with built-in standard unit (not implemented at
The maximum possible expansion of the bus system is shown in the following image.
9.1.1

Data bus addresses

Function: The individual devices in the buss system are assigned precise addresses. This is
set in the corresponding parameter in the parameter tree "BUS". The assignment
occurs according to the following table.
NOTE! Make sure that one controller is assigned bus address 10.
NOTE! Bus adresses may only be assigned once.
Operation:
them to heating circuits
the moment).
Address Device type
10 Control unit
20, 30, 40, 50 Control unit
11,...,19 Extra units
21,...,29 Extra units
31,...,39 Extra units
41,...,49 Extra units
51,...,59 Extra units
Note on operation
Setting bus address
Product documentation THETA NORM/UNIT
Assignment
Standard unit 1 as central controller
Standard unit 2 to 5 as add-on controllers for extension of
heating circuits or cascade
Assigned to controller 1 or general
Assigned to controller 2
Assigned to controller 3
Assigned to controller 4
Assigned to controller 5
Key / parametertree
DATA BUS
Parameter
PARAMETER 01
9-1