What is a BAS points list?
By Bassirou Thiam, building automation engineer · Updated
A points list, also called an I/O list or points schedule, is the table of every input and output each BAS controller handles: point name, type (AI, AO, BI, BO or software value), the field device it reads or drives, and its location. It sizes the controllers and drives programming, graphics and checkout.
Who uses it
The designer sizes controllers from it, the programmer builds the database from it, the graphics follow it, and the technician checks every point against it at startup. That is why its point names must match the sequences and the front end.
Columns, point types and a free template: what goes in a BAS points list.
Sources
Related
GuidesWhat goes in a BAS points listThe columns a BAS points list needs, the BACnet point types, and a method to build it from the control schematic. Free Excel template included.
GlossaryWhat is an I/O point in building automation?Definition of an I/O point in building automation: a physical input or output wired to a controller terminal, as counted in the points list.
GlossaryWhat are BACnet object types (AI, AO, BI, BO, AV, BV)?What AI, AO, BI, BO, AV, BV and MSV mean in BACnet, with a typical use for each, as they appear in a BAS points list.
GuidesBAS point naming conventionsHow to name BAS points so the controller, the front end, the points list and the sequences agree, with abbreviations, examples and tagging standards.