DSM-T0B: Small System Interface

Description
The DSM-T0B is a fully programmable, Native BACnet™ Building Controller that communicates on an RS-485 LAN using the BACnet MS/TP protocol. The DSM-T0B’s attractive housing includes an LCD display with a wide-angle view and an intuitive keypad.

Application

The DSM-T0B features an LCD with keypad that can

be used as a stand-alone interface for a building

network to set equipment schedules, adjust setpoints

and adjust network time.

Features

—Native BACnet firmware
—BACnet MS/TP communications
—4/8/16 button keypad
—Fully programmable in GCL+ to suit custom

applications
—Programmable LCD with backlight
—Application database can be loaded over the network —Controller firmware can be flash loaded over the

network
—Modbus capability pre-loaded in specific models —Supports modbus capability by flash loading in the

field via hardware key
—Derived Network Addressing (DNA) for simple

integration into a standard network architecture —Subnetwork can be configured for BACnet MS/TP

or expansion I/O
—Built in 10 kΩ thermistor —RS-232 Serial Port —Service port

Specifications

BACnet Device Profile

BACnet Building Controller (B-BC) LCD

Large font 4-digit alpha numeric display (for

time, object value or units)

Small font 4-digit alpha numeric display (for

time or units display)
12-digit alpha numeric display (for object

names, menu commands or options) 10 display icons representing different

functions Backlighting Keypad

4, 8 or 16 buttons (suitable for different

applications)

Security door Temperature Sensor

Thermistor input - 10kΩ at 77°F (25°C) Accuracy +/-0.4°F from 32-158°F

(+/- 0.2°C from 0-70°C)

Display resolution of 0.1°

Stability 0.24°F over 5 years (0.13°C) Technology

32 bit processor
1MB (8 megabit) Flash memory 319 KB SRAM for database Real-time clock with Lithium battery

and SRAM backup CPU status LED