ABUS RS485 User Manual
RS485
-
USB
ABUS TECHNOLOGIES INC.
User Manual
WARNING
This document should be passed on to the end user.
The contents of this manual are subject to change without prior notice.
All rights reserved.
ABUS gives no warranty of any kind with regard to this manual, including, but not limited to, fitness
for a particular purpose.
If any question arises or errors are found, or if any information is missing from the documents,
RS485-USB
please inform your supplier or inform at info@abustek.com
.
The specifications mentioned in the document are limited to those for the standard type under the
specified model number break-down and do not necessarily apply for customized instruments.
Please note that changes in the specifications, construction, or component parts of the instrument
may not immediately be reflected in this manual at the time of change.
If the customer or any third party is harmed by the use of this product, ABUS assumes no
responsibility for any such harm owing to any defects in the product which were not predictable, or
for any indirect damages.
Although Warning hazards are related to personal injury, and Caution hazards are associated
with equipment or property damage, it must be understood that operation of damaged equipment could,
under certain operational conditions, result in degraded process system performance leading to
personal injury or death. Therefore, comply fully with all Warning and Caution notices.
Information in this manual is intended only to assist our customers in the efficient operation of
our equipment. Use of this manual for any other purpose is specifically prohibited and its contents are
not to be reproduced in full or part without prior approval of Technical Department, ABUS Technologies
HEALTH AND SAFETY
To ensure that our products are safe and without risk to health, the following points must be
noted:
1. The relevant sections of these instructions must be read carefully before proceeding.
2. Warning labels on containers and packages must be observed.
3. Installation, operation, maintenance and servicing must only be carried out by suitably trained
personnel and in accordance with the information given. Any deviation from these instructions will
transfer the complete liability to the user.
4. Normal safety precautions must be taken to avoid the possibility of an accident occurring when
operating in conditions of high pressure and/or temperature.
5. Chemicals must be stored away from heat, protected from temperature extremes and powders kept
dry. Normal safe handling procedures must be used.
6. When disposing of chemicals ensure that no two chemicals are mixed.
Safety advice concerning the use of the equipment described in this manual or any relevant hazard data
sheets (where applicable) may be obtained from the Company address, together with servicing and
spares information.
ABUS TECHNOLOGIES INC.
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RS485-USB
.
CATALOGUE
Contents Page No.
1. Introduction 4
2. Presentation
Technical Parameters
4
4
3. Dimensions 5
4. Connections
Half Duplex RS-485 (2-wire)
1.
2.
Full-Duplex RS-485 (4-wire)
RS-422
3.
5. Installation
USB Driver Installation (Windows 98/ME/2000)
1.
2. USB Driver Installation (Windows XP)
Linux and Mac
3.
6. Configuration
1.
Conflicts with other USB devices Windows
Serial Port Assignment
2.
5
6
6
7
7
7
9
9
10
10
10
7. Safety Precautions 11
8. Warranty 11
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1. INTRODUCTION
The RS485-USB module is a cost-effective way to convert RS485 or RS422
industrial buses to a USB interface. When connected to a PC USB port the RS485-
USB module is automatically detected and is installed as a native COM port, which is
compatible with any existing serial communication application.
Multiple modules can be installed when using USB hubs thus allowing a hasslefree configuration of a multi serial system without any IRQ or DMA configuration. 1500
Vdc isolation between the USB port and RS485/RS422 protects the PC from spikes or
possible misconnections in the communication bus.
2. PRESENTATION
Technical Parameters
The RS485-USB converter can be configured for four-wire (Full Duplex) RS422 and RS485 or
two-wire (Half Duplex) networks. When operating in two-wire RS485 the data transfer control is
automatically done by the converter. Two independent and isolated RS485 networks can be supported
by one RS485-USB module thus duplicating the possible number of remote devices.
Computer interface: USB V1.1 Plug and Play.
Operational system virtual serial port driver. Supports Windows 98/ME/XP/2000/CE, MAC &
Linux 2.4.20 or superior.
Field Interfaces: RS485 Half Duplex (dual buses), RS485 Full Duplex or
RS422.
Jumper selected: RS485 / RS422.
Automatic flow control for RS485 Half Duplex.
120 Ohms internal resistors termination enabled by jumpers.
Data rate: From 300 bps to 1 Mbps.
Maximum RS485/RS422 cable length: 1200 m
Maximum number of devices in the RS485 network (unit load devices – 12 k):
Half Duplex: 2 x 32 devices
Full Duplex: 32 devices
Data transmission and reception LED indicators
Power: From the USB port. Consumption: <100 mA.
Isolation: 1500 Vdc (1 minute) from USB interface and the
RS485/RS422 interface.
RS485/422 bus protection: ±60 Vdc, 15 kV ESD.
USB connection: Mini-B connector. A 1.5 m cable with plugs mini-B and A is
provided with the module.
RS485/422 connector: Screw terminal type accepting 1.5 mm² (16 AWG) wires.
Operating environment: 0 to 50°C, 10 to 90% relative humidity, non-condensing.
ABS enclosure: 70 x 60 x 18 mm.
RS485-USB
ABUS TECHNOLOGIES INC.
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