BAS Routers route messages between BACnet/IP and BACnet MS/TP networks as per the
ANSI/ASHRAE 135-2004 standard. They allow BACnet/IP devices connected over Ethernet to communicate
with MS/TP devices. Each router is configurable via its webpage.
Two versions of the router do the same job but in different packages. For
permanent installation, the BASRT-B is housed in a metal case that
mounts on 35-mm DIN-rail and is powered from a 24 VAC/VDC source.
For portability, the BASRTP-B attaches to the USB port of any convenient
local computer. Each unit contains one MS/TP port and one 10/100 Mbps
Ethernet port.
The MS/TP port offers an optically-isolated transceiver.
It has a removable 3-pin terminal block for the EIA-485 connection. Through this port, up to 127 devices can be addressed — as many as 32 on the local bus. All MS/TP baud rates are supported from 9.6 to 76.8 kbps.
The Ethernet port offers a shielded RJ-45 connector. Through auto-negotiation
and Auto-MDIX, it automatically matches its duplex setting, data rate and signal polarity
to whatever is needed by the attached equipment. Therefore, any CAT5 cable can be used for hookup.
A resident web server allows commissioning, re-configuration and troubleshooting
with a standard web browser. A reset switch is provided on the router to set the unit to the factory default IP address.
Three LEDs are provided: The power LED glows green when proper power is provided.
A bi-color Ethernet LED glows green for 100 Mbps operation and yellow for
10 Mbps and indicates activity by flashing. A green LED flashes when MS/TP
traffic is received.
Each unit complies with Class A radiated and conducted emissions as defined by
EN55022 and CFR 47, Part 15.
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Tips, Tricks, and Reminders!
Ethernet networks can present many confusing symptoms, but asking some common questions
can help troubleshooting. Make your efforts more effective with the
principles discussed in The ABCs of Ethernet Trouble Shooting.
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