Question about Acer ALU 131 (91.AB861.001) Serial Adapter

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Usb to serial converter

I am using acer aspire 4720z model, with type number x86-based PC. I'm working as a sales and techinical Engineer. I need to communicate with the PLC for my projects. I got a new usb to serial converter cable and installed the software sucessfully. But when I connected the PLC with it for communication purpose, my plc is not detected in the PLC Software. When the same cable and the software is installed in another laptop(DHELL) it is working perfectly. Both are VISTA.

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  • 37 Answers

1. The USB to Serial has a comm port number, you can change that in Control Panel>Hardware and Software >Device Manager>Click on the adapter and make sure it's not disabled and try COMM 3 or a diffrent port you might have two conflicting each other.

I use Allen-Bradley and I also have to run it as admistrative privleges.

Hope this helps.

Posted on Aug 06, 2009

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Posted on Jan 02, 2017

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