How to Convert Hex To String

[RRoc]

I'm trying to display a Allen Bradley Controller Serial Number that's in HEX to String for my SCADA to display.

Any ideas?

 

[labeledas]

probably easier to do it on PLC side

see :
http://www.plctalk.net/qanda/showthread.php?t=47380

 

[RRoc]

Yes I'm trying to do that inside my PLC so my SCADA Programmer does not have to worry about it.

I saw that thread. I'll look at it again.

 

[labeledas]

Looks like he is masking the sint storing the result in temp and converting to ASCII equivalent

so for example 1F

first mask takes just the '1' portion
Xf0
ie mask is 1111 0000

result is 16#10 or 16
/16
gives 1
add 48
gives 49
which if you look up in ascii table is '1'

store in string

next mask you original SINT 1F
0x0f
0000 1111

result is
16#0f
or 15
add 48
gives 63 however ascii table 0-9 is 48-57 and 'A-F' is 65-70
so since our result is > 57 add another 7 to make it 70 in this case which happens to be ascii 'f'

so result is ascii '1' and ascii 'f'

hope this helps

ascii table http://www.asciitable.com/