Safety signals question

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Hi,

I’ve got a question relating to reading safety signals (‘ES1’, ‘AS1’, etc.). As far as I can tell, they are defined with access level “internal”, which allows read access.

But the following doesn’t work for me (refuses to connect):

TempSignal = Controller1.IOSystem.GetSignal(“ES1”);

Is is possible to read internal safety signals with FlexSDK? Am I doing something wrong?

Thanks!