For fast and precise quality diagnosis


The online tester for PROFIBUS networks: 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. It is the only device on the market to offer fully automatic, non-reactive detection of the PROFIBUS topology under running production conditions. 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.

PB-Q ONE: The online PROFIBUS tester from Indu-Sol

Highlights of the PROFIBUS testers PB-QONE

  • Unique on the market: Fully automated topology scan during operation
  • Ease of use, well-structured handling
  • Measuring results within seconds
  • Simple evaluation through traffic-light function
  • Also suitable for PROFIBUS PA (with additional adapter)
  • Complete physical and logical analysis for PROFIBUS DP & PA
  • Discover the PB-QONE & its advantages in moving pictures: To the video


Your advantages with the PROFIBUS tester

  You save time - The PB-QONE delivers measuring results within seconds which can be easily evaluated

  You save effort - The PB-QONE is easy and intuitive to use even without any previous knowledge

✓  You save money - The PB-QONE is a affordable multifunctional device that supports you in many tasks in PROFIBUS maintenance

  One device for physics & logic - The PB-QONE is a multifunctional device, which reliably evaluates both the physics and communication of your PROFIBUS DP and PA network

  One device for many tasks - With the PB-QONE you have an affordable multifunctional device for the commissioning, maintenance, service and troubleshooting of your PROFIBUS networks

Compact PROFIBUS tester for uncomplicated diagnostics and measurement in PROFIBUS networks


Evaluation of the physical and logical communication quality of your PROFIBUS system

The PB-QONE is a tool for the complete evaluation of PROFIBUS communication quality. The hardware is connected to the PROFIBUS system by a supplied adapter.

Its simple, intuitive operability and the clear evaluation of the measurement results enable the state of the physical and logical transmission quality in the network to be reliably evaluated within seconds.

In addition, the PB-QONE offers fully automatic and completely feedback-free topology determination under running production conditions. As a result, the PB-QONE records the actual connection of all network devices and even identifies repeaters, measuring points and the cable lengths between the devices. The graphic display shows measurement locations and segment structures at a glance.

This makes the PB-QONE ideally suited for every thinkable application such as certification and commissioning, maintenance and service as well as troubleshooting.

Display of quality values (PROFIBUS measurement with PB-Q ONE)Simple display of quality values

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.

View of measuring results (PROFIBUS diagnosis with PB-Q ONE)View of measuring results Display of the PROFIBUS topology using PB-Q ONETopology with measuring site management

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 of signal quality, PROFIBUS tester PB-Q ONE

Signal to noise ratio

The signal to noise ratio 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 of signal to noise ratio, PROFIBUS tester PB-Q ONE

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.

Display of PROFIBUS stations as tree structure, PROFIBUS tester PB-Q ONE

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.

PROFIBUS tester 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 temperature: -20 °C to +70 °C
  • Conformity: CE


Ask our experts

Do you have questions concerning the product or would you like a consultation? We are at your service!


Accessories for PROFIBUS tester PB-Q ONE

We offer you high-quality accessories for the PROFIBUS tester PB-QONE so that you are equipped for all requirements.


PROFIBUS PA adapter for PROFIBUS tester PB-Q ONE

With the PROFIBUS PA adapter, the PB-QONE can also be used for PROFIBUS PA networks.

M12 Y measuring adapter

M12 Y-measuring adapter for PROFIBUS tester PB-Q ONE

The M12 Y measuring adapter is used to connect the PROFIBUS tester PB-QONE.

Precisely evaluate PROFIBUS network!

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User video PB-QONE

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



Data sheet
english (PDF, 285 kb)

Firmware-Update (Download)

english (PDF, 2,51 MB)