My variable is the InChar (look the code) and I set it as a byte.Maybe you need to make the variable a number of some kind?
The possible value could be $a1 or $a2 or $aa.
When I type that value via the terminal I have it back (hserout) but I do not have correct answer from the DS1620.
The strange thing is that I send
$a1
and I receive back
$
a
1
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