Data Sheet for Product

2
Siemens
CB1Q3932en
Building Technologies 2017-06-12
Technology
BACnet
BACnet, an ASHRAE building automation and control networking protocol, was designed
specifically to meet the communication needs of building automation and control systems for
applications such as heating, ventilation, and air conditioning control, lighting control, access
control, and fire detection systems and their associated equipment.
The BACnet protocol provides mechanisms by which computerized building automation
devices can exchange information, regardless of the particular building service they perform.
As a result, the BACnet protocol may be used by head-end workstations, general-purpose
direct digital controllers, and application-specific or unitary controllers with equal effect.
MS/TP
MS/TP (Master-Slave/Token-Passing) is also unique to BACnet and is implemented using
the EIA-485 signaling standard. This is a shielded twisted-pair (STP) LAN operating at
speeds from 9.6 kbit/s up to 115.2 kbit/s. This LAN type is low cost and particularly suitable
for unitary controller communications.
Installation concept
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System Integration
Communication
Controller
Extension