Astar HT-3300 Especificaciones Pagina 193

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183
Reference Manual
00809-0100-4811, Rev DA
Appendix C: Rosemount 3300 Series with HART
®
to Modbus
®
Converter
January 2015
Rosemount 3300 Series with HART
®
to Modbus
®
Converter
Figure C-4. Multidrop Connection of 3300 Transmitters
Alternatively, the Rosemount 3300 Series Transmitters can be installed as shown in Figure C-5. If
this wiring layout is used, there is an increased risk for communication disturbances due to
differences in potential between grounding points. By using the same grounding point for
Modbus Master and Power Supply, this risk is reduced.
Figure C-5. Alternative Multidrop Connection of 3300 Transmitters
Power
Supply
120
120
RS-485 Bus
B
A
Internal
Ground Screw
Modbus
Master
Z
Internal
Ground Screw
External
Ground Screw
External
Ground Screw
Power
Supply
120
120
RS-485 Bus
B
A
Internal
Ground Screw
Modbus
Master
Z
Internal
Ground Screw
External
Ground Screw
External
Ground Screw
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