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Omron plc protect problem

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Hi guys !
I been trying to make some programs on a Omron PLC, CPM1A, and I have some problems protecting the program. I use Syswin to program it, and when I want to add password it says I need to protect it with function 49. I don't know what that is, and "help" aint helping me much. Can anyone explain this, or maybe a link ? I tried to google the problem, but that confuses more, than it helps.

Anyone ?
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