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Is there an IEC equivalent to the 984LL BROT function block?

Yes, the ROL and ROR, Rotate Left and Rotate Right and the SHL and SHR, Shift Left and Shift Right, IEC blocks perform the same function as the 984LL BROT block. These blocks will accomodate BOOL, BYTE and WORD datatypes.
The rotate function blocks will wrap bits around the word while the shift function blocks do not wrap the bits around the word.

Note: There are equivalent function blocks in Unity Pro.

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