We do not have a download file for the latest version (6.04), but you can try downloading it from the developer's site
Download version 5.046 from Software Informer
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The file is clean, see the report.
Version: 5.046 (x86/x64)
Date update: Dec 4, 2015
File name: winplc7-v5-046.zip
Size: 59.5 MB