22
Setting the Network Address
Switches
There are two rotary network address switches on a serial PowerScout 3037, labeled MSB and LSB.
These two switches are used to select the BACnet/Modbus address the client uses to communicate with
the PowerScout.
The rotary switches are 16-position, hexadecimal switches. The default factory setting is hex 01. The
address is a hexadecimal (hex) value, represented by the digits 0 through 9 and letters A through F. For
example, a network address of 100 in decimal is converted to 64 hexadecimal and set on the
PowerScout 3037 by:
MSB switch—select 6
LSB switch—select 4
In some cases the hex value may need to be converted to decimal when entered into the RTU or data
logger. See the Appendix for a hexadecimal conversion table.
The BACnet MS/TP MAC and Modbus address is a decimal value, represented by three digits: 000
through 009, 010-090, and 100-999.
Note:
BACnet MS/TP masters only support addresses 001–127.
Hexadecimal
Address
BACnet Address Availability
00
Reserved for resetting the PowerScout to Modbus mode with 9600 baud,
8 bit, 1 stop bit and no parity.
01-7F
Available (01/001 is the factory default setting).
80-FE
Reserved for BACnet slave devices.
FF
The rotary switches can be used to configure the communication protocol
to BACnet or Modbus as well as changing the baud rate if unsure of the
current settings (PS3037 only).
Table II-4: BACnet Hexadecimal Address Availability
Hexadecimal
Address
Modbus Address Availability
00
Reserved for resetting the PowerScout to Modbus mode with 9600 baud,
8 bit, 1 stop bit and no parity.
01-F7
Available for Modbus slave devices.
FF
Reserved for network wide broadcast.
The rotary switches can be used to configure the communication protocol
to BACnet or Modbus as well as changing the baud rate if unsure of the
current settings (PS3037 only).
Table II-5: Modbus Hexadecimal Address Availability
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