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Protective Stop C207A0: Fieldbus input disconnected.

Application Description:

It occur that the Forum receive questions about the error messages “Protective Stop C207A0: Fieldbus input disconnected” like shown on the picture below.

There can be a genuine reason for this messages if the “Ethernet/IP Field Bus” is actively being used in a robot application. And then the error might be communication issues between the robot and the Fieldbus device (Sometimes a PLC).

However it can also just be that the “Ethernet/IP” has been inadvertently activated without intention to use this protocol for communication.


The “Ethernet/IP” protocol can be toggled On/Off in the menu “Ethernet/IP” under “Installation” tab. Below it is shown activated (because the “Disable” button is available and therefore possible to deactivate it).


By pressing the “Disable” button the Ethernet/IP will be deactivated.


And now the program can run without this error messages.


Disclaimer: While the Zacobria Pte. Ltd. believes that information and guidance provided is correct, parties must rely upon their skill and judgement when making use of them. Zacobria Pte. Ltd. assumes no liability for loss or damage caused by error or omission, whether such an error or omission is the result of negligence or any other cause. Where reference is made to legislation it is not to be considered as legal advice. Any and all such liability is disclaimed.

If you need specific advice (for example, medical, legal, financial or risk management), please seek a professional who is licensed or knowledgeable in that area.

By Zacobria Lars Skovsgaard
Accredited 2015-2018 Universal Robots support Centre and Forum.


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