Hi Donal, Don Launder here from ASCO. Let me see if I can shed some light to help out. 1) As Rune has pointed out above, the manifold always starts counting back from what would be baseplate 8 in an all CHARM I/O setup. 2) No - We always start from "baseplate" 8 and work backward. this allows for expansion of either I/O or Valve. I put baseplates in "" becasue we don't physically occupy a baseplate, as you pointed out in your OP, but it is virtually taking up those 12 bits on the bus 3) Again as Rune has indicated a typical 12-station manifold would look something like this in the DeltaV addressing: 8-12, 8-11, 8-10, etc. to 8-01. 4) There is some degree of configurability within the node itself including: baseplate numbers the manifold will occupy, the ability to flip the counting, and the ability to flip the banks (our term for refering to the "baseplates we occupy). I can send you the Tecnical Manual if your interested in learning more. Email me here: don.launder@emerson.com - Typically I'd send you a link, but we are migrating the page now and I had some issues finding it.
Don Launder
Director, Global BD & Strategic Accounts - Hybrid
Emerson Automation Solutions
Don.launder@emerson.com
(603) 491-1477