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PD 3950 USB to P-NET Interface


General information

The PD 3950 USB to P-NET Interface module provides an interface between the P-NET Fieldbus and a standard PC running VIGO The Fieldbus Management System version 5.7 or higher.


Using the PD 3950, any standard desktop, laptop or single board PC with a USB port, may be used as a node in a P-NET installation, in applications such as process and factory automation, machine control, building automation, data acquisition etc.


Specific Features

         P-NET Fieldbus communication interface.

         P-NET RS485, multi-master P-NET interface.

         Galvanically isolated P-NET communication port.

         Manual baudrate selection 9600, 76800 Baud.

         Can be connected to any standard USB port or USB HUB.

         Powered by the USB port via the USB cable.

         Supports firmware upgrade via USB.

         Channel for holding application licences.

         Compact designed, suitable for wall mounting, mounting underneath desk etc.



PD 3950 Block Schematic

The following block diagram shows the internal structure of a PD 3950 USB to P-NET Interface:






Channel Structure

The PD 3950 consists of 3 channels as shown in the table.


Channel No.

Channel name

Channel description



Service channel



Channel for holding application licences



USB channel




Electrical Specifications




Power consumption

Max. 246 mA







Operating temperature

-25 C - 70 C

Storage temperature

-40 C - 85 C







Relative humidity:

Max. 95%







EN 61000-6-2, EN 61000-6-3





Mechanical Details

The PD 3950 USB Interface is housed in a black plastic case.







66 x 51 x 35 mm

Case material





Front foil



Back plate


Black anodized aluminum



75 grams



USB Cable

PROCES-DATA recommends that only the provided USB cable is used together with the PD 3950 USB interface.





Related topics

Wiring diagram

Led indicators

Installation and Configuration

Ordering Information