Siemens SIMATIC TI500 Bedienungsanleitung PDF herunterladen (Seite 14)

Product Overview

1-2

TIWAY I Gateway User Manual

1.1 Introduction

The

TIW

Y I Gateway allows a TIW

Y I network of PLCs to be hosted by a

Modbus-compatible host system. Figure 1-1 shows the relationship of the

Gateway to one of several possible Modbus-compatible host systems.

The Foxboro SPECTRUM, Fisher PROVOX, and Honeywell TDC 2000 are

distributed control systems which have interfaces to PLCs. These systems

primarily perform supervisory control and data acquisition functions to the

PLCs, using an RS-232-C type of connection into PLC data highways.

For example, the Honeywell TDC 2000 system communicates with the

Gateway by way of a Data Highway Port (DHP), the Fisher PROVOX

system uses a Programmable Controller Interface Unit (PCIU), and the

Foxboro SPECTRUM system uses a FOXNET Device Interface (FDG).

I000000

Foxboro

SPECTRUM

Fisher

PROVOX

Honeywell

TDC

2000

MODBUS

Compatible

Host System

TIWA

Y I Gateway

Programmable Controllers

TIWA

Y I Network

FDG

PCIU

DHP

“xyz”

Figure 1-1 TIWAY

I Gateway as Inter

face Between PLC Network and Host System

The Gateway

Interface

Distributed Contr

Systems

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