Reference Manual
00809-0200-4420, Rev HC
Appendix D: Redundancy
July 2015
73
Redundancy
D.4 Mounting and connections
Redundant Gateways follow similar mounting and connection practices as a standalone
Gateway. Refer to Section 3: Mounting and Connection for more information. In addition to the
standard practices, the following considerations should be taken when installing redundant
Gateways.
D.4.1 Mounting
The redundant Gateways should be mounted in a location that allows convenient access to the
process control network as well and provides good coverage for the wireless field network.
The redundant Gateway antennas should be mounted at the same height and be spaced
between 3 ft to 9 ft (1m to 3m) horizontally. This is to ensure that they provide identical
coverage for the wireless field network and to help eliminate coverage gap in the event of a
switch over.
D.4.2 Ethernet
An Ethernet connection to the host system will support Modbus TCP, OPC, AMS
®
Wireless
Configurator, and HART IP protocols. When using this architecture, connect the secondary
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.
A. Engineering Station
B. Process Control Network
C. Gateway A
D. Gateway B
E. Primary Ethernet
F. Secondar y Ethernet
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