HART Functionality
3-7
Figure 3-2. HART Communication Terminals and Access Door
NOTE
The lead set must be used to communicate with a wired or wireless device. The 475
Field Communicator cannot communicate wirelessly with devices.
Wiring Diagrams
Figure 3-3 shows how to connect the 475 Field Communicator to a HART loop.
Figure 3-3. Connecting to a HART Loop
Figure 3-4 shows how to connect the 475 Field Communicator directly to the terminals
of a HART device.
Figure 3-4. Connecting Directly to a HART Device
HART Communication Terminal Markings
Access Door
Communication Terminals
HART Device
Current
Meter
RL
≥
250
Ω
mA
Power
Supply
+
+
+
+
+
+
-
-
-
-
-
-
Current
Meter
mA
Power
Supply
RL
≥
250
Ω
HART Device
+ -
+
-
+
-
+
-
+
-
+
-
Summary of Contents for 475
Page 1: ...USER S MANUAL ...
Page 2: ......
Page 4: ...2 ...
Page 10: ...Introduction 1 2 ...
Page 34: ...Learning the Basics 2 24 ...
Page 80: ...Troubleshooting 5 10 ...
Page 93: ...B 7 ...
Page 94: ...B 8 ...
Page 95: ...B 9 ...
Page 96: ...B 10 ...
Page 102: ...C 6 ...
Page 108: ...G vi ...
Page 113: ......