PROFIBUS tester for quick quality diagnosis


Plug-in, measure, result!

Complicated, incomprehensible tables and diagrams were yesterday! The PROFIBUS tester PB-QONE enables a modern maintenance: you get precise measuring results in seconds which can be easily evaluated thanks to the graphic display based on the traffic-light principle. These and other useful features of the compact multifunctional device make it irreplaceable for every maintenance engineer who strives for simple quality diagnosis in the PROFIBUS network.

Your benefits

  • You save time
  • You save effort
  • You save money
  • Quality evaluation
  • One device for many tasks
  • Easy handling

Highlights PROFIBUS tester

  • Ease of use, well-structured handling
  • Simplified topology illustration with measuring site management
  • Well-structured, editable report to process further in *.pdf or *.doc format
  • Measuring results within seconds
  • Simple evaluation through traffic-light function

Evaluate your PROFIBUS network precisely!

PB-Q ONE plug-in, measure, result


Art.-Nr. 110010050

Functions of PB-Q ONE

The PB-QONE detects and evaluates the state of the physical and logical transmission quality in the network reliably. The hardware is connected largely non-reactive to the PROFIBUS network by a supplied adapter.

With the PROFIBUS tester PB-QONE the transmission levels of the slaves in operation can be physically evaluated and displayed by a measurement bar chart as well taking into account the 7V-drivers of modern PROFIBUS devices. All measured and test results can be displayed and logged on the PC via a supplied software. The software is easy to use. A clear menu navigation allows you to switch between a diagnostic mode and an expert mode.

Quality values PROFIBUS tester Simple display of quality values
PB-Q ONE diagnostic view View of measuring results
PB-Q ONE topology function Topology with measuring site management

The levels of the bars (in green, yellow or red) infer a measure of the physical transmission quality which includes an evaluation of the differential voltage, rising edges and the transient response. As a result all capacitive, inductive and resistive effects become visible.


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Reliable evaluation of


Evaluation of physical quality

Signal quality

The PROFIBUS tester is able to ascertain the amount of the voltage difference as well as the shapes of the signals during PROFIBUS telegram transmissions. The results are visualized in form of a bar diagram, showing a quality value for each analysed bus device.

Display signal quality PB-Q ONE

Signal to noise ratio

The signal to noise ration indicates the shortest distance between a logic "0" and the logic "1". It shows how far the signal of a device is affected by external interferences or signal fluctuations. It helps to recognize sporadic physical errors.

Display signal to noise ratio PB-Q ONE

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Evaluation of communication quality

Device details

All bus devices are presented in form of a tree diagram, including address, module name and device symbol. The colour highlighting (green, yellow, red) provides a quick condition evaluation of each device.

PB-Q ONE device information

Telegram mode

The telegram mode extends the range of analyses. A large number of filters and triggers is available to analyse the data traffic in terms events but also certain data content.

PB-Q ONE Telegram mode

Master simulator

The integrated master simulator is designed to determine the actually wired bus topology and analyse the signal quality of the connected bus devices. The master simulator is used in the offline mode without SPC.


Technical details

  • PROFIBUS interface: 9-pole sub-D
  • USB interface: USB 2.0
  • Transmission rate: 9,6 kBit/s - 12 MBit/s
  • Voltage supply: approx. 0,5 A via USB
  • Dimensions (H x W x D): 60 x 117 x 35 mm
  • Protective system: IP20 • operating temperature: 0 °C to +50 °C
  • Storage temperatur: -20 °C to +70 °C
  • Conformity: CE

Evaluate your PROFIBUS network precisely!

PB-Q ONE plug-in, measure, result


Art.-Nr. 110010050

PROFIBUS brochure

PROFIBUS brochure Indu-Sol GmbH

Basics and coherences of the proven technology in compact form as well as tips to latest valid standards and guidelines

EMC brochure

EMC product brochure

The brochure explains how to build up a stable EMC structure of automation systems and detect interferences


Catalogue 2013/2014 Indu-Sol GmbH

Solutions and products for fieldbus and network analysis