Dimax English Dimax Spanish Dimax German/Dutch Dimax Hungarian/Magyarorszag Dimax French/Francais Dimax English Dimax Japanese Dimax Russian Dimax Translations
Digital, Analog, PWM I/O Extender with Modbus interface
 General Description  Features  Block Diagram  Compatibility List
 SW Tools & Utilities  Downloads  Documentation  Applications
 Email Support  Order On-line  Warranty  Related Products

Comprehensive and Versatile I/O Extender for Modbus capable automation systems

  • Full compliance with Modbus RTU Specification
  • Six variable 0-10V Analog Outputs
  • Six Frequency and Duty Cycle configurable PWM's
  • Digital (on/off) Inputs and Outputs
  • Connection to VRV/VRF Air Conditioning System Line
  • Customizable for specific user applications
General Description

CoolEx is a Modbus I/O extender with analog, digital and PWM inputs and outputs. CoolEx can be used in conjunction with Programmable Logic Controller (PLC) or any other Modbus master that requires some extra I/O or special I/O functionality. CoolEx is controlled by master by means of standard Modbus requests defined in "Modbus Application Protocol Specification".
CoolEx physical connection to MODBUS is Two-Wire EIA/TIA-485 standard interface recommended by "Modbus over Serial Line Specification and Implementation Guide". A number of CoolEx devices can be connected to single 2W-bus. To utilize CoolEx with TCP/IP Modbus master over Ethernet network MODBUS 485RTU/TCP Gateway can be used.


  • Six independent variable analog outputs with 0-10V output range.
    Output Voltage is determined by corresponding holding register. Output current is up to 40mA. Analog output can be directly connected to voltage controlled device like Fan Drive, Pump Drive, Torque Drive, FRG, Voltage to Frequency converter and so on.

  • Six PWM Outputs with variable frequency and duty cycle.
    Frequency and duty cycle controlled independently for each PWM Output via corresponding holding registers.

  • Digital Inputs and Outputs with 5V or 12V logic one level.
    Can be connected to Dry Contacts, Dampers, Valves, Pumps, etc...

  • Fully compliant with MODBUS Specifications.
  • Connectivity to Air Conditioning (AC) System Line.
    For special custom applications CoolEx can be connected to VRV/VRF Air Conditioning System Line to provide basic AC control and monitoring functions.

  • Field upgradable and customizable.
    Firmware (FW) can be fully upgraded by customer without any need to open unit or send it to manufacturer. Upon request XDIMAX can develop and provide unique customized FW to suite specific end user requirements.

Block Diagram


Email Support

Order On-line

Price Buy Now
In Stock Request Quotation
Skype Chat

Related Products

  • CoolMaster 1000D
    CoolMaster 1000D - RS232 Interface Adapter for Daikin VRV AC System.

  • CoolMaster 2000S
    CoolMaster 2000S - RS232 Interface Adapter for Sanyo VRF AC System.

  • CoolMaster 3000T
    CoolMaster 3000T - RS232 Interface Adapter for Toshiba VRF AC System.

            Copyright DIMAX 2002-2012