Resources|Blog|PLC WorkShop for Square D|PLC WorkShop for Square D v6.20 Release Notes PLC WorkShop for Square D v6.20 Release Notes Posted: 1/15/2003 Features Added support for all versions of Microsoft Windows including 3.1, 95, 98, NT, 2000, Millennium, and XP. Added support for Sylink board. Added support for COM3 and COM4. Contact Sales