Introduction; The Gateway Interface; Distributed Control Systems; Tiway I Gateway As Interface Between Plc Network And Host System - Siemens SIMATIC TI500 User Manual

1.1

Introduction

The Gateway
Interface
Distributed Control
Systems
Foxboro
SPECTRUM
or
Fisher
PROVOX
or
Honeywell
TDC 2000
or
MODBUS
Compatible
Host System
Figure 1-1 TIWAY I Gateway as Interface Between PLC Network and Host System
1-2 Product Overview
The TIWAY I Gateway allows a TIWAY 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).
FDG
PCIU
DHP
"xyz"
TIWAY I Gateway
Programmable Controllers
TIWAY I Network
TIWAY I Gateway User Manual
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