The similarity of PROFIBUS DP and PROFIBUS PA inspired Pepperl+Fuchs developers to create the transparent segment coupler. The segment coupler displays all devices connected to the PA network as if they were DP field devices. Via standardized Proxy technology, this now includes integration of Profibus PA into PROFINET controllers and asset management systems.

Segment couplers are configuration free and transparent. The communication speed on the PA side is independent of the DP side. All PA devices are configured on Master Class I and Class II as DP instrumentation. PA devices only see the PA master of the segment coupler, which simulates the DP Master.

Data telegrams and power supply are transmitted via the same cable to the field device. The power supply components of the segment coupler put the power on the cable. They are certified for Zone 2 installation. Different voltages and supply current levels up to 500 mA give you the choice of explosion protection applicable:

• High-Power Trunk
• FISCO
• Entity

The power hub version provides choices for redundancy enabling high-availability plant design. Basic segment couplers with everything in a single housing typically satisfy the needs of smaller applications.