Foundation Fieldbus

(IEC 61158-2)


The profile and the products

The advantages of SI 792

  • Flexibility with high security of data and measurement
  • Optimal user interface with graphical status signals 
  • Wide choice of sensors and armatures 
  • pH, ORP, Conductivity (contacting), Conductivity (inductive), Dissolved Oxygen 
  • Two-wire Controller: Supply of power and data with FISCO-bus powered 
  • Certified following ATEX II 2(1)G EEx ia IIC T4, C1D2 or C1D1 and CSA 
  • We are registered at the FOUNDATION FIELDBUS® organisation.

The advantages of FOUNDATION FIELDBUS® H1

  • Intrinsically Safe Controller
  • Simple and cost effective wiring 
  • Number of instruments per segment is related to power consumption (Ex-Zone (EEx ia) max 10) 
  • Flexible Topology: Tree, Star or Line 
  • FISCO model (Fieldbus Intrinsically Safe Concept) 
  • Communication complies with IEC 61158-2 with 31.25 Kbit/s, MBP (Manchaster Coding Bus Powered) 
  • PROFIBUS® PA and FOUNDATION FIELDBUS® utilize the same Physical Layer 
  • Implementation into PLC Systems via Linking Devices 
  • Block structure, see picture below 
  • Acyclic data for Alarms, remote operation, configuration and diagnosis 
  • Instruments can be hot plugged

Further informationen

Certificates following FOUNDATION FIELDBUS® Standard:

IT045900 Si792x P-FF pH/Redoxpotential
IT045600 Si792x C-FF Leitfähigkeit (Kontaktiv)
IT046000 Si792x T-FF Leitfähigkeit (Induktiv) 8398 Series
IT045800 Si792x E-FF Leitfähigkeit (Induktiv) 3700 Series
IT045700 Si792x D-FF Sauerstoff


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Other BUS applications: