Rosemount Smart Wireless Gateway Specifications download pdf (Page 79)

Reference Manual

00809-0200-4420, Rev HB

Appendix D: Redundancy

January 2015

Ethernet port on Gateway A directly to the secondary Ethernet port on Gateway B. Then

connect the primary Ethernet ports for both Gateways to a process control network using sepa-

rate/redundant network switches. See Figure D-4 Ethernet Connection Architecture.

Figure D-4. Ethernet Connection Architecture

Note

The primary Ethernet port for each Gateway should be connected to separate network switches

on the same process control network. Consult a control system administrator for more details

about available redundant network switches.

Simplex RS-485

A simplex RS-485 host connection supports Modbus RTU protocol. When using this

architecture, connect the secondary Ethernet port on Gateway A directly to the secondary

Ethernet port on Gateway B. Then wire the RS-485 ports for both Gateways in parallel to a single

serial card at the host system. See Figure D-5 Simplex RS-485 Architecture.

A. Engineering Station

B. Process Control Network

C. Gateway A

D. Primary Ethernet

E. Secondary Ethernet

F. Gateway B

G. Primary Ethernet

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Rosemount Smart Wireless Gateway Specifications Page 79