Probing for Tags about cpppo HOT 4 OPEN

Nope. Like every other part of the protocol, we'd need to sniff the activity using Wireshark, and then reverse-engineer the protocol elements used. Not documented, in any of the thousands of pages of documentation that I've read.

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It turns out that AB does document this. In their own "special" way. I got this from a user of my library and I thought I would pass along the joy for the season:

Logix5000 Data Access Programming Manual

Have fun. I love that the tag instance numbers come back in 32-bit quantities, but you can only use 16-bit instance IDs when requesting the next batch.

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Attribute 7 gives the size of one element and attribute 8 gives the array dimensions (all 3 at once each as a u32).

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Thanks for that! I'll have a look. Pull requests accepted!!

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