Figure 4-11: Alternative Multidrop Connection of 5300 Level Transmitters
G
A. “A” line
B. “B” line
C. 120Ω
D. RS-485 bus
E. Modbus Master
F. Power supply
G. Internal ground screw
H. External ground screw
Star topology
For a star topology connection of the Rosemount 5300 Level Transmitter, the transmitter
with the longest cable run needs to be fitted with a 120-Ω termination resistor.
Reference Manual
Electrical installation
00809-0100-4530
April 2019
Reference Manual
103
Содержание Rosemount 5300 Series
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