Setra System SRCM - Manual (Page 32)

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Network Setup The BACnet setup screen is enabled by pushing position 1 switch (labeled
MAC) to the on (right) position. After configuration the switch must be
moved to the off (left) position.
The Network Setup screen gives the option for the user to configure the
Network and other parameters which have to be read from the network.
BACnet configuration requires the user to configure the following param-
eters.
1. Baud Rate - User can select any one of the 4 standard Baud rates for
RS485 communication from 9600, 19200, 38400 and 76800 by using the
change button. Auto baud features is not supported.
2. MAC Address - User can enter Medium Access Control address specific
to this device by touching on this field. User can enter a value from 0 to
127 as this unit is a BACnet master, address 128 to 254 reserved for 254
and 255 reserved for Broadcast.
3. Device Instance - The Device instance number must be unique within a
BACnet internetwork to identify each device. Instance numbers are defined
as 22 bit long, in decimal instance number ranges from 0 to 4194,3,03.
FFFFNDD is the network addressing scheme, here FFFF represents the Fa-
cility code. N is the number of the network in the building and DD ranges
from 0 to 99 to represent the individual device on the network.
Five position dip
switch location