Integration into the building management system

The Stiebel Eltron Modbus TCP / IP interface

Modbus is a standard for home and building control, which often is used in commercial and industrial buildings . Different building functions can be integrated and connected via a Modbus master and an example visualized on a monitor screen in the control room .

The integration of the heating in a Modbus system is often via separate hardware components such as plug-in cards, which serve the sole purpose of Modbus connection. Data transmission takes place via serial or IP .

STIEBEL ELTRON have deveoped a more innovative solution: the Modbus TCP / IP interface is a software extension for the ISG Web, which makes the ISG into a Modbus slave. Thus, the simple integration of many types of heat pump is made possible. The remaining functions of the ISG Web remain completely intact .

The ISG with Modbus TCP / IP software thus allows you to control your heating system via smartphone,  tablet, computer, etc., and enables services such as remote maintenance and integration into a Modbus building automation. All in one unit .

Features

  • Reading and writing on standard 16-bit input and holding registers
  • Simultaneous reading and writing of multiple objects with a single command
  • After main functional blocks assorted and consecutive Modbus registers
  • Setting the operating modes and setpoint temperatures
  • Monitoring of current values ​​such as temperatures, status, relevant processes , etc.
  • Monitoring of system data , such as heat volumes, duration , etc.

System requirements

  • ISG Web and compatible heat pump   
  • Modbus Master with Modbus TCP / IP suppor
  • IP network connection to the ISG and to the Modbus Master

Applications

  • Visualization, operation and monitoring of the system
  • Connection to other systems via Modbus TCP/IP interface

Benefits

  • All standard functions of the ISG Web are still available
  • Remote maintenance and SMS and e-mail notification in case of failure still available optionally equipped with the ISG
  • Connection to a Modbus master over Ethernet
  • Easy upgradeability
  • Low installation costs