HART communication compliant I/O modules (BU100H^*) execute both 4–20 mA analog input/output processing functions for control loops and communication interface functions for communication with HART-compliant devices.

BU100H modules maintain full compatibility with existing analog input/output modules for base unit mounting type in module shape and I/O functions. As a result, they are easy to use in an Azbil DCS such as Advanced PS or Harmonas-DEO.

It is possible to introduce Azbil's InnovativeField Organizer Device Management System, which provides various device management solutions, and also keep existing control loop functions using BH100H.

* There are two kinds of HART communication compliant I/O module, one for 4–20 mA analog input and one for 4–20 mA analog output.