Emerson Micro Motion 1700 Configuration And Use Manual page 214

Using ProLink III with the transmitter
3.
206
Figure B-2: Connection to transmitter terminals
A
A. Computer
B. Signal converter
C. Transmitter
Note
This figure shows a serial port connection. USB connections are also supported.
To connect to a point in the local HART loop:
a. Attach the leads from the signal converter to any point in the loop.
b. Add resistance as necessary to achieve at least one volt across the connection
points.
Important
HART/Bell 202 connections require a voltage drop of 1 VDC. To achieve this, add
resistance of 250–600 Ω to the connection.
Micro Motion Model 1700 Transmitters with Analog Outputs
C
B