Dear All please guide me how to break level 4 password of S7-200 PLC CPU226. When I upload it says "The PLC has been Protected to prevent program Upload".
Please help.
Thanks
Level 4 password protected S7-200 CPU 226
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mohdabshr
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ytangsuan
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Re: Level 4 password protected S7-200 CPU 226
From 6ES7298-8FA24-8BH0> Table 4-3, level 4 never allows upload the user program, data & CPU configuration. The theory is valid as I already tried it. If you have a backup of current project, try a "clearPLC" command and download no password project to CPU.