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System-10 Dual Network Interface Installation Guide 05/14 - 0972-1 Page 6

1.4 PROTOCOL SELECTION

The System-10 Dual Network BTU Meter is provided with an IP connection and a single RS485

connection. Both MODBUS TCP/IP and BACnet UDP/IP are always available from the IP

connection via a single IPv4 IP address. The RS485 connection can be congured for BACnet

MS/TP or MODBUS RTU. The protocol options are selected via dip switch settings. The table

below identies the dip switch settings for each protocol. The switch settings also control

which network is allowed to remotely reset totals on the network.

Dip switch SW3 Protocol selection and reset function settings

Protocols Reset 1 2 3 4

BACnet IP/Modbus TCP/Modbus RTU None Off Off Off Off

BACnet IP/Modbus TCP/Modbus RTU BACnet IP On Off Off Off

BACnet IP/Modbus TCP/Modbus RTU Modbus TCP Off On Off Off

BACnet IP/Modbus TCP/Modbus RTU Modbus RTU On On Off Off

BACnet IP/Modbus TCP/BACnet MSTP None Off Off On Off

BACnet IP/Modbus TCP/BACnet MSTP BACnet IP On Off On Off

BACnet IP/Modbus TCP/BACnet MSTP Modbus TCP Off On On Off

BACnet IP/Modbus TCP/BACnet MSTP BACnet MS/TP On On On Off

Baud Rate Dip

Switches

(See Section 1.6.1)

Protocol Selection

Switches

1 2 3 4 5 6 7 8 9 10 11 ... 31 32

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