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Connection over local loopFigure C-3:
A
C
D
E
R1
R3
R2
B
A. PC
B.
Signal converter
C. Any combination of resistors R1, R2, and R3 as necessary to meet HART communication resistance requirements
D. DCS or PLC
E. Transmitter, with wiring compartment and power supply compartment opened
Note
This figure shows a serial port connection. USB connections are also supported.
4. To connect over a HART multidrop network:
a.
Attach the leads from the signal converter to any point on the network.
b. Add resistance as necessary.
Important
HART/Bell 202 connections require a voltage drop of 1 VDC. To achieve this, add
resistance of 250–600 Ω to the connection.
Using ProLink III with the transmitter
Configuration and Use Manual 303