Overview; Network Architecture - Emerson Smart Wireless Gateway Reference Manual

Reference Manual
00809-0200-4420, Rev EA
November 2011
Section 5

OVERVIEW

NETWORK
ARCHITECTURE
Figure 5-1. Ethernet
Architecture
Host Integration
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Network Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-1
Internal Firewall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-3
Modbus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 5-4
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.
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. Fiber Optic and RS485 are available as
optional connection types. 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, 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. Often
there are two networks for redundancy purposes.
Smart Wireless Gateway
5-1