Bacnet Objects And Network Configuration - Contemporary Controls BASstat BAST-221C-BW2 User Manual

4.4

BACnet Objects and Network Configuration

Transmission type
• Physical layer: Wi-Fi 802.11 b/g/n
• Protocol: BACnet/IP
• UDP Port Number: BAC0 (47808)
• MAC address: Wi-Fi chip MAC address found written on the back side of thermostat or
in Engineering Menu item (Phy3). This can assist when multiple Wi-Fi thermostats are
installed.
• Device Instance: 100001
Initial Configuration
All configuration parameters are settable through use of the buttons on thermostat by entering the
Engineer Menu, or once installed on the BACnet network, configuration can also be altered using
BACnet commands. Network command-based configuration can also be accomplished on the bench
using a Wi-Fi enabled laptop/computer/tablet/smart phone and Contemporary Controls' free
Discovery Tool.
Wi-Fi Communication Configuration
Overview
The BASstat Wi-Fi thermostat is preconfigured with a BACnet Device Instance of 100001 and a UDP
Port Number of 47808 (decimal) equivalent to BAC0 (hexadecimal). To alter this configuration, enter the
Engineering Menu by holding down the UP and DOWN buttons simultaneously for 5 seconds. Use the
UP and DOWN buttons to navigate through the menu and change menu item values. Use the MODE
button to enter a menu item and accept/confirm a selected value. To exit the Engineering Menu,
navigate to menu item (End) and press MODE, or the menu will exit automatically when not used after 5
seconds.
Addressing
A unique Device Instance Number throughout the entire BACnet internetwork is required to distinguish
the device from all other BACnet devices. When more than one BASstat is installed at the same time,
their Device Instance Number must be configured prior to connecting to the BACnet/IP network or
BACnet communication will fail due to duplicate device instances.
Device instance can be modified in Engineering Menu items (dEVH) – high bytes and (dEVL) – low
bytes. Device Instance = (dEVH)*1000+(dEVL). Device Instance example: if (dEVH) is set to 4194 and
(dEVL) is set to 7, Device Instance Number = 4194007. Device Instance Number can also be changed
by writing to BACnet object [AV21] Device Instance once the thermostat is online. The BACnet UDP
Port Number can be configured in Engineering Menu item (UdP).
BACnet/IP Wi-Fi (BW2) model will initially boot up as a Wi-Fi Access Point to allow for IP configuration.
UM-15090500-AA1
BACnet
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