Parameter Correlation

[lircy]

Do these parameters highlighted in red relate to the PLC firmware version, the product order number, or something else?

[jogibear9988]

For the OMSSessionVersion there is a public enum OMSSessionVersion

OMSVersionV9 = 576,
OMSVersionV10 = 640,
OMSVersionV11 = 704,
OMSVersionV12 = 768,
OMSVersionV13 = 832,
OMSVersionV14 = 896,
OMSVersionV14_1 = 897,

[jogibear9988]

And a TIA CPU has in the TIA Project also a OMS Version set (in Meta attributes...)

    <Attribute Name="OMSVersionIdentifier" Type="Int64" Value="897" />

[bonk-dev]

Regarding key IDs, the key id is the same as IDs in the blob itself, but they are encoded with VLQs I believe.
As for the public key flags, I honestly don't know. They might be saved in the TIA Portal key store, but then where would get the symmetric key flags from?

[lircy]

However, I have found that different MLFBs correspond to different parameters. For instance, the parameters for 6ES7 511-1AK02-0AB0 and 6ES7 516-3AN01-0AB0 are not the same.

[jogibear9988]

Maybe they are fixed for CPU types...

I think TIA also reads some of the files in the Meta subdir:

C:\Program Files\Siemens\Automation\Portal V20\Meta