Connection over local loop
Figure C-5:
A
C
D
E
F
R1
R2
B
+
–
A. PC
B. RS‐232 to Bell 202 converter
C. Any combination of resistors R1 and R2 as necessary to meet HART communication resistance requirements
D. DCS or PLC
E. Transmitter with end‐cap removed
F. External power supply
Note
This figure shows a serial port connection. USB connections are also supported.
The signal converter must be connected across a resistance of
250–600
Ω
. The mA
output requires an external power supply with a minimum of
250
Ω
and 17.5 V. See
the following figure to help determine the appropriate combination of voltage and
resistance. To meet the resistance requirements, you may use any combination of
resistors R1 and R2. Note that many PLCs have a built-in
250-
Ω
resistor. If the PLC is
powering the circuit, be sure to take this into consideration.
Using ProLink III with the transmitter
198
Micro Motion
®
Compact Density Meters (CDM)
Summary of Contents for CDM100M
Page 8: ...Getting Started 2 Micro Motion Compact Density Meters CDM ...
Page 12: ...Before you begin 6 Micro Motion Compact Density Meters CDM ...
Page 20: ...Configuration and commissioning 14 Micro Motion Compact Density Meters CDM ...
Page 26: ...Introduction to configuration and commissioning 20 Micro Motion Compact Density Meters CDM ...
Page 110: ...Integrate the meter with the control system 104 Micro Motion Compact Density Meters CDM ...
Page 116: ...Operations maintenance and troubleshooting 110 Micro Motion Compact Density Meters CDM ...
Page 124: ...Transmitter operation 118 Micro Motion Compact Density Meters CDM ...
Page 194: ...Using the transmitter display 188 Micro Motion Compact Density Meters CDM ...
Page 208: ...Using ProLink III with the transmitter 202 Micro Motion Compact Density Meters CDM ...