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FAQ – Frequently Asked Questions and Application Notes

We have documented the answers to the most frequently asked questions to enable you to easily and quickly find answers directly.

PROFIBUS general

What is the layout of the PROFIBUS terminating resistor?

Pin assignment of the PROFIBUS connector

RS-485

Signal

Description

SHIELD

Grounded shield

Reserved for power supply via bus (rarely supported in DP)

B/B´ (red)

RxD / TxD-P

Transmit and receive data (+)

CNTR-P

Control signal for repeater (+), not always supported

C/C´

DGND

Data reference potential and supply termination (-)

Supply voltage terminating resistor (+) IMPORTANT!!

Reserved for power supply via bus (rarely supported in DP)

A/A´ (green)

RxD / TxD-N

Transmit and receive data (-)

CNTR-N

Control signal for repeater (-), not always supported

PROFIBUS Interfaces / Gateways / Driver

PROFIBUS interface is not accessible

Message in the Device Manager: 'Windows cannot find the specified file'

When installing the driver, the following message appears in the Device Manager: 'Windows cannot find the specified file'

In rare cases, Windows 2000/XP may have problems properly detecting new hardware. A possible cause is a missing registry entry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ RunOnce

You can add this entry manually if you are logged in with administrator privileges.

Attention: Please follow these instructions very carefully. Incorrect settings can render your computer useless.

Procedure:

Open the registry editor (Start->Run->regedit).
Go to the following entry by expanding the corresponding folders in the tree on the left: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
Select 'CurrentVersion' and create a new registry key named 'RunOnce' ('Edit' menu 'New' -> 'Key')
Leave all other registry settings unchanged.
Close the registry editor and reboot your computer.

Where can I find the GSD files for master operation?

Where can I find the GSD files for slave operation to connect to S7 controllers?

Where can I find GSD files for ABB robots?

My PROFIBUS interface is not found in a search with the SCAN button

Which version of the PROFIBUS driver am I using?

Can I license KON-DP via USB or software key?

Is there a LabView driver for the PROFIBUS interface cards?

Is a .NET API available for PROFIBUS boards?

How to integrate the .NET PAPI to get it working in a .NET 4.0 Project

Ultrabooks have a problem with the USB power supply in battery operated mode

PROFIBUS Configurator

Changing the Slave Address with the Configurator

Detect devices: the configurator detects the slaves when you run the scanning process.
Important: Delete the cyclic data container (CyclicData) of the slave whose address you want to change
Then activate the configuration via the Toolbar (or context menu or F5). The PROFIBUS Master establishes a connection with the configured Slave.
Change the desired station address. Highlight the slave whose address you want to change, open the context menu and select "Properties". A dialog box opens in which you can set the desired address. Click “Apply” to confirm your settings. After about 10 seconds the “Apply” button becomes grey which means the device address has changed. Click “OK” to close the dialog.
Deactivate the configuration
Activate the configuration again.

The slave can now be accessed with its new address.

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