Introduction - Siemens GW-23 Technical Manual

Lms modular

Table of Contents

Introduction

Note:

e1476.doc

The GW-23 interfaces both the peripheral control units and a virtual digital I/O sub-

system to a structured network such as:

• X.25 via X.28 asynchronous RS-232 PAD

• X.25 via ISDN channel D and asynchronous RS-232 terminal adapter

• Ethernet TCP/IP protocol

Also, a dial-up, switched modem connection is supported as backup of any of the

above listed solution.

The GW-23 gateway is composed by one CPU board, one optional ethernet adapter

and one optional I/O board. The gateway is then installed on a connection board,

where the serial and I/O connections are made available.

Each GW-23 can manage up to

4 serial lines;

1 ethernet 10baseT connection;

up to 16 digital inputs and 8 digital outputs

The optional I/O espansion is supported only with special version of manage-

ment station software; this board is not documented in this edition of the GW-

23 technical manual.

The four serial lines can be connected to

one RS-232 adapter for X.28 or ISDN-D;

one full modem;

two to Cerberus control units, supporting Cerban protocol

Fig. 1-1 : GW-23

Data and design subject to change without notice. Supply subject to availability

Cerberus Division

Introduction

03.99

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