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© 2009 Active Research Limited

USB Configuration

To communicate with the USG-1, the COM port number 

that Windows has allocated to the USB port needs to be 

determined. The following guide will walk the user through 

this standard operation.

The 

Actisense

  USB  to  Serial  Gateway,  USG-1  is 

completely  USB  port  independent:  it  can  be  easily 

unplugged from one USB port and connected to another 

available USB port on the same PC without the COM Port 

number changing.

To  achieve  this  independent  operation,  plug  the  USG-1 

into  each  required  USB  port  that  you  require  it  to  work 

with in turn, install the USB drivers and manually change 

the allocated COM port number to the same number for 

each USB port. Once configured, the COM port number 

will not change unless instructed to do so by the user.

This is very useful when the USG-1 is working in unison 

with a software program that is set up to use a particular 

COM  port,  as  the  user  does  not  need  to  re  select  a 

different  COM  port  every  time  the  PC  re  boots,  or  the 

cable is swapped between two USB ports.

Step by step guide

1. 

Make  sure  the 

Actisense

  USG-1  is  connected  to  an 

available USB port on the PC. From the Windows ‘

Control 

Panel

’,  open  the  ‘

System  Properties

’  window  and  click 

on the ‘

Hardware

’ tab.

2.

  Click  on  ‘

Device  Manager

’  and  expand  the  ‘

Ports 

(COM & LPT)

’ list by clicking on the ‘

+

’ sign next to it. You 

will find the ‘

Actisense USG’

 in the list, followed by the 

allocated COM port number.

Содержание USG-1-B-485

Страница 1: ...ections Issue 1 04 Create a safe serial port connection to an RS485 network or an IEC61162 2 compliant marine connection that may be on a different power circuit Provide a fully compliant RS485 port f...

Страница 2: ......

Страница 3: ...l port 5 Features 5 Software updates 5 RS485 Interfacing 6 The basics 6 The RS485 signals 6 Opening the USG 1 6 USG 1 connections 7 Connecting Devices 8 RS485 Connections 8 Connecting to a 3 pin RS485...

Страница 4: ...ferred or copied without the expressed written permission of Active Research Limited Active Research Limited will not be held responsible for any damage to the user that may result from accidents or a...

Страница 5: ...ay work but if not you will either simply get no data or at worst damage your equipment The USG 1 485 solves this by using ingenious circuitry unique to Actisense in its bi directional transmitter cir...

Страница 6: ...led as either A and B or and respectively depending on the instrument and manufacturer When connecting between different manufacturers there can be some confusion but it is simple and easy to remember...

Страница 7: ...Both sets are connected in parallel on the board This allows a network to be created by allowing a connection in from the RS485 network and the second set used to connect to further devices on the net...

Страница 8: ...85 transceiver on the USG 1 485 Connecting Devices Figure 2 RS485 connections RS485 Net In A RS485 Net Out B A B Ground Notes 1 It is recommended that all device interconnection cables used should mee...

Страница 9: ...odel instead using the RS232 connections detailed in that user manual This method will allow full bi directional isolated connection to a PC RS232 port Connecting to a 3 pin RS485 Listener or Talker I...

Страница 10: ...this section will be very familiar To all other Windows users the required steps are detailed below to help with installation The steps for Windows 98 SE are very similar to those of Windows XP and s...

Страница 11: ...l Converter driver is now installed click Finish to complete the wizard and wait for the Found New Hardware Wizard to appear again This second wizard will guide you through the USB Serial Port driver...

Страница 12: ...d manually change the allocated COM port number to the same number for each USB port Once configured the COM port number will not change unless instructed to do so by the user This is very useful when...

Страница 13: ...or the USG 1 device It is not necessary to change the default settings here as each software program will define these settings itself 4 Click on the Advanced button and choose a different COM Port nu...

Страница 14: ...t the Talker device is correctly connected to the USG 1 485 that it is powered on and that it is sending data In addition the USB driver must be correctly installed and the PC software must have the a...

Страница 15: ...current at max load of 100 ohm At maximum load differential drive voltage reduces to 1 4v 14 mA Output short circuit current note 1 Due to short circuit protection 50 55 mA Galvanic isolation From USB...

Страница 16: ...Fax 01202 746683 International 44 1202 746683 Actisense on the Web For advice support and product details E mail support actisense com Website www actisense com Actisense is a registered trademark of...

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