Reading Bytes from LSB to MSB?

I think you mean the bool array pattern gets reversed during the SERIALIZE instruction.  Is that correct?

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I am using a large bool array and want to convert that to a byte array.  I am using the serialize command, which is working great except that it reads the byte from MSB to LSB so the hex value of the byte that is entered in serialize is backwards from what I need. 

Ex. bool array pattern 11110011 (F3) will serialize and come out as byte array[0] 11001111 (CF) 

Is there another command or way that I can rearrange each of the bytes in the byte array to be LSB to MSB?

Thank you in advance!

11110011 => 11001111 is bit order reversal
11110011 => 00111111 is byte order swapping
Which problem are you facing?

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Ex. bool array pattern 11110011 (F3) will serialize and come out as byte array[0] 11001111 (CF)
..

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Bit order reversal

 The GATHER/SCATTER instruction would have been al alternative to SERIALIZE/DESERIALIZE when working with bits.

But your situation surprises me. Normally it is byte order that is swapped. For that situation there is no ready made instruction to handle the situation. The code needed to mirror the byte data will then depend on how the data is structured. 

A sample of the data structures you have may allow focussed response.

I know this might sound ridiculous, but.. try this and let us know exactly what happens.

In the byte array definition, change it from:

abc : array[0..n] of byte

to:

abc : array[0..n] of USINT

Change nothing else and if the bits in the USINT array change in any way compared to being a BYTE array, report the results for the bit order.

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Bit order reversal