Single loop controller (X2 OS) for BACnet or MODBUS communication

The TCX2 is a programmable electronic universal controller with communication capabilities. Each control loop may use 2 PI sequences and 6 binary stages. The TCX2 comes with a built in RS485 communication interface that allows peer to peer communication with an operation terminal.

The TCX2 communication MODBUS controllers are designed as universal controls equipment suitable for a large number of applications. They may be used in zoning applications which are monitored by a MODBUS RS485 network.

The controllers communicates on a BACnet MS/TP network over RS485 is suitable for a large variety of applications such as zoning applications residential and commercial, air handling units, economizers, etc.

Flexible application configuration is made with a parameter-setting routine using the standard operation terminal.

Complete parameter sets may be copied by use of an accessory called AEC-PM1 or exchanged with a PC using an RS485-USB converter and the EasySet program.


  • Fan coil units
  • Fan, pump control
  • Ventilation
  • Underfloor fans


  • RS485 bus communication with remote operation terminal OPA2-VC
  • BACnet MS/TP  or slave MODBUS communication over RS485 RTU or ASCII
  • BACnet B-ASC device profile
  • Universal PI and/or binary control for any input/output
  • Multiple auxiliary functions: heat-cool auto changeover, automatic enable, set point compensation, occupancy control
  • Differential, averaging, min. and max. functions
  • 8 free assignable alarm or interlock conditions
  • Password protected programmable user and control parameters
  • Clone parameter set with plug-in memory AEC-PM1 - easily transport application parameters to multiple controllers
  • Exchange data with PC using the EasySet tool


 Item name  Item code  Option  Description
 TCX2-14050-MOD  40-110081  with MODBUS communication

 PI-controller, cabinet mounted,
  VCP communication, 1 control loop,
  4 NTC, 5 relays, ideal for fan coil systems

 TCX2-14050-BAC  40-110084  with BACnet communication


X2-Operation Terminals
Remote and built-in operation terminals
Temperature Sensors
Sensing elements or accessories for temperature sensors
AEI-4UI - Input Extension
Input extension for X2 controllers
AEC-PM1 - Memory
External memory for parameter sets for TCX2-series controls
AEX-BAC - BACnet Plug-In
Communication Plug-In for BACnet MS/TP communication
AEX-MOD - Modbus Plug-In
Communication Plug-In for MODBUS slave communication
AMM-1 TCX2 - Panel Mounting Kit
Panel mounting kit for TCX2 - series controller
AEC-USB - USB to RS-485 Converter Cable Kit
For programming X2-devices with EasySet tool


Operation Manual

Install Sheet

Application Notes