What is a BAS network riser diagram?
By Bassirou Thiam, building automation engineer · Updated
A network riser diagram is the BAS drawing that shows every controller, router, switch and network on a job, floor by floor, and how they connect. Each panel is labeled with its network address and BACnet device instance. Controls contractors often call it the network diagram; specs usually say riser.
Why it matters
It is a required item of the controls submittal and the first drawing a technician opens to find a device on site. If it does not match the points list or the installation, checkout and service both slow down.
What it shows
- the BACnet/IP backbone and each MS/TP trunk;
- every controller, router, switch and repeater;
- floor penetrations and panel locations;
- network addresses and device instances.
Step-by-step method: how to make a BAS network riser diagram.
Sources
Related
GuidesHow to make a BAS network riser diagramWhat a BAS network riser diagram must show, how the BACnet/IP backbone and MS/TP trunks are laid out, and a step-by-step method that matches real specs.
GlossaryWhat is BACnet MS/TP?Definition of BACnet MS/TP (master-slave/token-passing) over RS-485: how it works, addressing, and the segment limits that shape a BAS riser.
GlossaryWhat is a BACnet device instance?Definition of the BACnet device instance: the number that identifies a device across the whole internetwork, valid range and uniqueness rule.
GlossaryWhat is a BAS submittal?Definition of a BAS controls submittal: the package of drawings, points lists, sequences and product data sent for approval before installation.