How to set idle time or time-out limit for remote access for powershell

I am using Powershell script to collect the Operating System and logged-on user information name for the machines in domain.
Script has been given ib the attachment.
Script is accessing the machine which their host names given in a text file and getting OS and looged-on user and appending the information in a csv file for each machine in the domain.
The problem is that if a machine not turned on or the mobile machine not in the office the access time of the script is very long. So scanning all machines is lasting too much.
Could i put a limit for access time to skip the machine if the script can not access in a few seconds?
Thank you
Cagatay

OS-and-User-Collect.txt
certuranAsked:
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Eduardo GoicovichIT ConsultantCommented:
there's no timeout implementation on gwmi

pick this link (nice custom solution)

http://www.muscetta.com/2009/05/27/get-wmicustom/
certuranAuthor Commented:
thank you for advise. I am not good at powershell. But this will seem to solve my issue if I could know which parts must I change according to my system. Could you possible write here the parts for me? Thank you again.
Cagatay

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certuranAuthor Commented:
I could not the study on it. But It seems to be able a solution if it is studied. thanks.
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