Reference Manual
00809-0200-4420, Rev HC
Section 5: Operation and Maintenance
July 2015
35
Operation and Maintenance
Section 5 Operation and Maintenance
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 35
Network architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 35
Internal firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 38
Modbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 39
EtherNet/IP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 45
5.1 Overview
This section describes how to connect the 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 Emerson
™
WirelessHART
®
security guidelines, the Emerson 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.
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.
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