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Figure 3. Symbio 500 BACnet links
Setting the Address
The three (3) rotary address dials on the Symbio 500 serve one or two purposes depending upon the
network: they are always used for the MAC Address, which is sometimes all or part of the BACnet
Device ID.
Figure 4. Setting the rotary address
Use a 1/8 inch (3.2 mm) flathead screwdriver to set rotary address dials. These dials rotate in either
direction.
MAC Address
The MAC Address is required by the RS-485 communication protocol on which BACnet operates. Valid
MAC addresses are 001 to 127 for BACnet.
Important: Each device on the link must have a unique MAC Address/Device ID. A duplicate address or
BACnet Device ID
The BACnet Device ID is required by the BACnet network. Each device must have a unique number
from 001 to 4094302.
BACnet Networks Without a Tracer SC+ System Controller
On BACnet networks without a Tracer SC+ system controller, the Device ID can be assigned one of two
ways:
BAS-SVX091A-EN
a 000 address setting will interrupt communications and cause the Tracer SC+ device
installation process to fail.
Wiring Installation
23
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Troubleshooting
