5 Operation and Maintenance
5.1 Overview
This section describes how to connect the Emerson
™
Wireless 1420 Gateway (Gateway) to
a host system and integrate data gathered from the field device network. It covers
network architectures, security, and data mapping.
In accordance with WirelessHART
®
security guidelines, the Gateway should be connected
to the host system via a LAN (Local Area Network) and not a WAN (Wide Area Network).
5.2 Network architecture
Physical connection types are important when determining the network architecture and
what protocols can be used for integration. Ethernet is the primary physical connection
type and RS-485 is available as an optional connection type. The following network
architecture diagrams will help when integrating data from the Gateway into the host
system.
5.2.1
Ethernet
An Ethernet connection supports Modbus
®
TCP, OPC, AMS Wireless Configurator,
Ethernet/IP
™
, and HART
®
TCP protocols. Using this connection type, the Gateway is wired
directly to a control network (see Figure 5-1) using a network switch, router, or hub. There
are often two networks for redundancy purposes.
Reference Manual Operation and Maintenance
00809-0200-4420 September 2020
Emerson.com/Rosemount 43