trying to read the LED status of an H-CPU

Dear Experts,

I am trying to read the LED status of an H-CPU but unable to get any status of any LED? I tried with SZL_ID W#16#74 and W#16#74 and with different index using example program but the Ret_Val is around 32639. I tried to use directly SFC 51 to get the data but got the same return value i don't know how to handle this but if anyone of you know then help me.

Thanks in advance.

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Split from LED Status S7-400H (CPU417-5H PN/DP).

Hello,

sry, will be not helpful directly but only ask about your post from previous Topic (look inside your post after split). That sugestions from Saravana doesn't help you? I think that sugestions are good in my opinion to get some data.