We have a site that has metasys controllers boards, and talking with Johnson controls rep, they say that this system is a closed n2 protocol system, meaning a third control system ,(ALC) can't interface with it. But there is also a open N2 protocol that a third party control system can interface with. Question is, can this "closed N2" system be opened so I can interface with? Has anyone came across this issue before? Is there an adapter that can open this system up without replacing the metasys control boards.
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