Ducati RS 232, RS 485 User Manual

Via M.E. Lepido, 182 - 40132 BOLOGNA - P.O.BOX 4052 BorgoPanigale

Tel.: [phone] - Fax: [phone] - WEB: www.ducatienergia.com

DATA LINK CONVERTER

RS 232 / RS 485

USER’S MANUAL

0798

DUCATI

energia s.p.a.

i

Table of contents

1. INTRODUCTION.................................................................................................... 1

2. DESCRIPTION OF THE CONVERTER ................................................................. 2

3. APPLICATION IN NETWORKS OF ANALYZERS CONSISTING OF MACH30,

MACH20 and MACHSMART UNITS......................................................................... 4

4. TECHNICAL CHARACTERISTICS: ...................................................................... 6

4.1 Power Supply: ........................................................................................................................ 6

4.2 Operating Conditions: ............................................................................................................. 6

4.3 Standards:............................................................................................................................... 6

4.4 Miscellaneous: ........................................................................................................................7

DUCATI

energia s.p.a.

1

1. INTRODUCTION

DUCATI energia s.p.a., pursuing a program of increasing participation in the energy

conservation sector, has developed a converter of RS 232 / RS 485 signals which can be used both
with MACH 30 (three-phase), MACH 20 (single-phase) and MACHSMART analyzers at the panel
board and as a signal converter to insert in a generic system between the RS 232 serial port of a
Personal Computer and the RS 485 serial port of an instrument (oscilloscope, comparison bridge,
gauge, etc.).

The RS 485 serial line that links the Personal Computer with the MACH or with a generic device

can be up to 1500 meters in length and must consist of a Belden 9841 type shielded two-wire cable.

The main characteristics of the converter are the following:

• complete transparency of software for the user;

• opto-insulated and two-way flow of data;

• baud rate standard of 9600 bps;

• suppression of transient disturbances from the RS 485 serial line to protect the

converter itself and the connected PC;

• coverage up to about 1500 meters.