Resources|Blog|PLC WorkShop for Siemens S5|PLC WorkShop for Siemens S5 v5.11 Release Notes PLC WorkShop for Siemens S5 v5.11 Release Notes Posted: 2/16/2005 Solutions Contacts and coils referring to timer and counter addresses now display ladder status correctly. Validating of a stretch flip-flop no longer generates Invalid Cast error message. Contact Sales