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[Unity Pro v11] Why the function block "ROL_DWORD" works incorrect in M580 platform?

Question:
Why the function block "ROL_DWORD" works incorrect in M580 platform?
It doesn't rotate the bit to the correct position. In other PLC platforms, it works well.

Answer:
This is a known issue on Unity 11 and it will be fixed on Unity 12.

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