On Oct 30, 2016, at 2:39 PM, Thomas Wiens <th.wiens@xxxxxx> wrote:
> 1) It seems to be impossible to decode a value inside the bitmask as
> signed integer
>
> The "Error code" value should be 16 bit signed integer.
But you said it was a 64-bit unsigned integer:
{ "Error code", "s7comm-plus.returnvalue.errorcode", FT_UINT64, BASE_HEX, NULL, 0x000000000000ffff,
NULL, HFILL }},
Try saying it's a 16-bit signed integer - FT_INT16 - instead.
Note, however, that we don't support showing negative octal or hex values; if you want it to show up as a signed value, display it with BASE_DEC or BASE_HEX_DEC.