D Redundancy
D.1 Overview
Redundancy for the Emerson
™
Wireless 1420 Gateway (Gateway) increases the availability
of the wireless field network by providing two sets of physical hardware which operate as a
single Gateway system. This section covers setup and installation of a redundant Gateway
system. It also covers diagnostics and integration to help monitor the health of the
redundant Gateway system.
• Where to mount the respective antennas
• Illustration of maximum redundancy including dual switch and UPS
• Understanding how the fail over works and experience to expect
• How to leverage the multimaster capability for Modbus
®
integrations
D.2 Requirements
Gateway
• Firmware Version 4.3.19 or greater is recommended
• RD option for Gateway Redundancy
• Static IP Address
• Must have matching output protocols (e.g. Modbus or OPC) on each Gateway
Host system
• Ethernet connection for Modbus TCP or OPC DA communications
• Serial (RS-485) connection for Modbus RTU communications
D.3 Setup redundant gateways
When configuring redundant Gateways, it is only necessary to configure one system. The
other Gateway will be configured automatically when it is paired with the first Gateway.
Choose one Gateway as the starter Gateway. For the purposes of this document, it will be
referred to as Gateway A. The other Gateway will be referred to as Gateway B.
D.3.1
Configure redundancy system settings
To configure redundancy system settings:
Procedure
1. Connect a PC/laptop to the Ethernet 1 port on Gateway A.
2. Log in using the admin user account.
Reference Manual
Redundancy
00809-0200-4420 September 2020
Emerson.com/Rosemount 85
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