In the ECOFAST system, all devices with bus capability are connected to PROFIBUS DP using the bus cables.

The bus cable is implemented as a hybrid cable and contains:

• PROFIBUS DP in copper RS 485;
• Four additional copper cores for carrying 24 V DC:
  • 24 V DC, not switched (for electronics and inputs)
  • 24 V DC, switched (for outputs, disconnectable e.g. for EMERGENCY OFF)

The ECOFAST hybrid cables are sold by the meter or in fixed lengths preassembled with ECOFAST connector (Han Brid) and socket.