MRP_Role field usage

[FredB]

Hello,

I am currently testing our IOC with ARTTester (version V2.46.2.202).

I observed the following behavior during MRP tests:

- When running "MRP On-Off - Client" followed immediately by "MRP Check - Client", the test passes successfully.
- However, when running "MRP Check - Client" alone after a power cycle of the IOC, the test fails.

The issue seems related to the MRP_Role field in the read frame (index 0x8050 – PDInterfaceMrpDataReal).

Observed value:
- Media Redundancy Disabled (0x0000)

Expected value:
- Media Redundancy Client (0x0001)

(This expected behavior was confirmed by comparison with a Siemens device.)

I am unsure why this discrepancy occurs and why our implementation reports an incorrect value after a power cycle.

I have reviewed the relevant standard documents, including GSDML specifications and guidelines, but I could not find a clear explanation of the expected behavior or usage of the MRP_Role field in this context.

Could anyone clarify:
- how this field is expected to be set,
- and where the relevant specification details can be found?

Thank you in advance for your support.

Kind regards

[M_PNO]

Hello,

I am currently testing our IOC with ARTTester (version V2.46.2.202).

I observed the following behavior during MRP tests:

- When running "MRP On-Off - Client" followed immediately by "MRP Check - Client", the test passes successfully.
- However, when running "MRP Check - Client" alone after a power cycle of the IOC, the test fails.

The issue seems related to the MRP_Role field in the read frame (index 0x8050 – PDInterfaceMrpDataReal).

Observed value:
- Media Redundancy Disabled (0x0000)

Expected value:
- Media Redundancy Client (0x0001)

(This expected behavior was confirmed by comparison with a Siemens device.)

I am unsure why this discrepancy occurs and why our implementation reports an incorrect value after a power cycle.

I have reviewed the relevant standard documents, including GSDML specifications and guidelines, but I could not find a clear explanation of the expected behavior or usage of the MRP_Role field in this context.

Could anyone clarify:
- how this field is expected to be set,
- and where the relevant specification details can be found?

Thank you in advance for your support.

Kind regards

Hi Fred,

The first step for users of the PROFINET test system is to contact their preferred test laboratory.
If they can't help, please contact [email protected].

Best,
PI