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Answer on session complete #5

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phaef opened this issue Feb 5, 2018 · 1 comment
Open

Answer on session complete #5

phaef opened this issue Feb 5, 2018 · 1 comment

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@phaef
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phaef commented Feb 5, 2018

First of all, great project and very well documented on your blog. Thanks alot!

About the issue:
When the VMC sends Vend-Session complete (113h 004h 017h) the mate dealer should answer with end session (N07h) and not with ACK (100h). I don't know if 'N' should be logic 1 or 0.

It's only small detail, maybe they changed the speccs in the meantime....?

If you accept the issue, please also update it on your blog for consistency or make a remark.

@Bouni
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Bouni commented Feb 13, 2018

Where did you got this information from?
The latest MDB spec V4.2 [0] page 169 says that the SESSION COMPLETE should indeed be answered with an ACK and the next POLL should be answered with the END SESSION.

session-complete

But I noticed that the manufacturers do not every time stick to the specification and I had to implement a non conform sequence for my machine to get everything up and running. So maybe that's the case for
your machine, too!?

Please tell me what make and model you have so that future users experiencing this issue can profit from that knowledge!

[0] https://www.namanow.org/images/pdfs/technology/mdb_version_4-2.pdf

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