PIC STATEMENT
Every BACnet device is required to have a "protocol implementation conformance statement“ (PICS). A
PICS is a BACnet specification sheet, containing a list of a device's BACnet capabilities.
It contains:
• a general product description
• details of a product's BACnet capabilities
• which LAN options are available
• a few other items relating to character sets and special functionality
The PICS is the place to start to see what a device's capabilities are.
BACNET TOPOLOGY
A typical BACnet Network consists of devices connected to physical networks. Each device is a separate
piece of hardware and has a physical connection to the network. Devices are given a unique Device
Instance Number which can be a number between 0 and 4194302. BACnet MS/TP devices have additional
addressing designations called MAC addresses. For most users it is the Device Instance Number which is
used as a reference, but the combination of the Network Number and MAC address of an MS/TP device
may be configured by a System Integrator to avoid any MAC address conflicts on the EIA-485 network.
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