Figure D-5: Simplex RS-485 Architecture
A. Engineering station
B. Process control network
C. Controller and I/O
D. Serial card
E. RS-485 bus
F. Secondary Ethernet
Note
In either a simplex or dual RS-485 architecture, the primary Ethernet ports can be
connected to an asset management network to provide connectivity to AMS Device
Manager or AMS Wireless Configurator.
D.4.4
Dual RS-485
A Dual RS-485 host connection support Modbus RTU protocol. When using this
architecture, connect the secondary Ethernet port on Gateway A directly to the secondary
Redundancy Reference Manual
September 2020 00809-0200-4420
90 Emerson.com/Rosemount
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