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Thermal Solutions Boiler Controller To Building Automatio

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<strong>Thermal</strong> <strong>Solutions</strong> ProtoNode Start Up guide Page 12 of 32<br />

3.3 Wiring the ProtoNode RER to RS-485 Field Protocol<br />

<br />

<br />

<br />

Connection from ProtoNode RER to BACnet MS/TP and Metasys N2 networks<br />

See Section 4 for information on connecting the ProtoNode RER to a BACnet/IP network.<br />

The Field Protocol can be connected to the 3-pin connector on ProtoNode RER as shown.<br />

ProtoNode Pin # Pin assignment<br />

Pin 1 RS-485 +<br />

Pin 2 RS-485 -<br />

Pin 3<br />

RS-485 GND<br />

Figure 5: Connection from ProtoNode to RS-485 Field Protocol –BACnet MS/TP or Metasys N2<br />

<br />

If the ProtoNode is the last device on the RS-485 trunk, then enable the End-of-line termination needs to be<br />

enabled. The default is off.<br />

End-of-Line Switch<br />

0<br />

Figure 6: End-of-line termination on from ProtoNode to RS-485 Field Protocol – BACnet MS/TP or Metasys N2.<br />

ProtoCessor 1991 Tarob Court Milpitas, California 95035 USA Web: www.protocessor.com<br />

Tel: (408) 964 4444 Fax: (408) 964 4425 <strong>To</strong>ll Free: (800) 317 8319 x141 email: support@protocessor.com

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