How to convert an array of bytes into a single integer

[Ace_Archer]

Hello!

So, At the moment, I'm trying to receieve data from a device that sends back data as an array of 10 bytes, where the first 2 bytes are a header, the next 6 are a word count that's suppose to be a single 48 bit value, and the last 2 are an error count which is suppose to be a single 16bit value.

Ex:

Word recieved

(---Header---)   (----------------------------------Word Count------------------------------)   (Error Count)         
0            120     0               44              221          155          96             48             0              0

So, in theory, what I want to do is be able to calculate the values like this:

(---Header---)   (----------------------------------Word Count------------------------------)   (Error Count)         
0            120     0               44              221          155          96             48             0              0
Binary Values:  00000000 00101100 11011101 10011011 01100000 00110000 00000000 00000000
Concat. Vals  :  000000000010110011011101100110110110000000110000      0000000000000000    
Calc'd  Vals    : = 192696508464 words                                                              = 0 Errors
                         * 40 (40 bit words)
Totals             : = 7.7078603e+12 bits total                                                         = 0 Errors Total

But, the problem(s) I'm running into is that all the methods I'm using seem to not be correct.

I've tried:

Flattening the data and then unflattening it as a U64

Convering the data to bool arrays, concatinating it, then converting that to a number

Joining all the bytes together using the join function

Typecasting a byte array to a U64

And with every method, the data I get out is incorrect (In the sense that the values are incorrect compared to calculating it manually like I did above), and at this point I'm unsure how to go about getting the correct values, so any sort of help would be greatly appreciated!

Thanks!

[crossrulz · Accepted solution]

This seems to work for me...

[Ace_Archer]

I Don't know what part of it I was getting wrong before, but this worked perfectly! Thank you so much, I appreciate it!