
Preface
ix
TIWAY I Gateway User Manual
Preface
This
manual describes the basic features, operation, and installation of the
TIWAY
I Gateway
. The Gateway provides an interface between the
SIMATIC
TIW
A
Y I network and a distributed control system host using
Modbus
protocol.
The TIW
A
Y I Gateway translates Modbus commands from a host into the
TIWA
Y I protocol format. Since the Modbus and TIW
A
Y I systems are
entirely different in protocol and interface requirements, the Gateway
serves as a protocol translator and as a type of network monitor
.
For example, the TIW
A
Y I Gateway can provide protocol translation for the
following host systems.
•
The Honeywell TDC 2000
Data Highway Port (DHP) with one
Gateway can monitor up to eight programmable controller (PLC)
stations with one Network Interface Module (NIM) for each PLC.
•
The Foxboro SPECTRUM
FOXNET
Device Interface (FDG) with
one Gateway can monitor up to 64 stations equipped with NIMs.
•
The Fisher PROVOX
Programmable Controller Interface Unit
(PCIU)
can monitor up to 8 stations with NIMs.
The TIW
A
Y I Gateway is available in four models, offering a choice of
communication ports and voltage supplies, as listed in T
able 1.
T
able 1
TIWA
Y I Gateway Models
Model Number Communication Ports Supply Voltage
PPX:500–7301 RS-232-C/Local Line
120 V
AC
PPX:500–7302 Dual RS-232-C
120 V
AC
PPX:500–7303 RS-232-C/Local Line
240 V
AC
PPX:500–7304 Dual RS-232-C
240 V
AC
NOTE:
These models replace the previously available model PPX:500–7200
series of the TIW
A
Y I Gateway
.
Purpose of this
Manual
Gateway System
Capacities
TIWA
Y I Gateway
Models
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