Allen Bradley Firmware v20 and prior

[quote=“Kevin.Herron”][quote=“everardohr”]
Is there a protocol change in v21+ that is not supported by Ignition included drivers?
[/quote]

Yes, that’s exactly right.
[/quote]

Care to elaborate on the details of the protocol change? I do a great deal of low-level work with Ethernet/IP and I hadn’t noticed this.

(I did run into a protocol issue with recent A-B processors, but it affected all firmware versions on the newer processors.)