That's a very ingenious solution!! Thank you very much!!! 

P.S: This solve my question but I'm curious about the solution that would be needed to implement a conversion from BigEndian to LittleEndian (Eg: talking about Bytes, convert ABCD to DCBA) Would you do the same but using VB instead of VW and using 3 blocks instead of 1?

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Split from Modbus Big/Little Endian and bits frame.