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#9 dc.readbytes(...) = -128

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nobody
None
5
2008-03-11
2008-03-11
Anonymous
No

If my program is running for a long time, the function readbytes returns -128.

But, my question is: when readbytes returns -128, Is there a way for return a normal comunication?

I try close plc connection, port connection on different order, but the fuction still return -128

Thanks.

Discussion

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    Same problem for me