When using DCF on a matrix element there seems to be no 'straight forward' way to determine what DCF interface corresponds with what matrix in or output nbr.
To execute a crosspoint set one has to specify the matrix in and output numbers.
But when resolving interfaces through DCF the only way I could determine the matching in/output id of the matrix command is to go through the labels assigned (but these are not mandatory and not guaranteed unique neither).
Is there any unambiguous way to link DCF interfaces to matrix i/o numbers ?
One small addition to what Tim answered, for DCFs linked directly to a matrix and not to a table-backed data source the format of the content in the [Interface Dynamic Link] parameter (id 65095) is slightly different.
Below you can see an example
Here you can see that the string has 3 "components".
For inputs, the second item corresponds to the matrix input numbering, and for outputs, the second item has a * and the numbering is on the 3 component.
As you may have noticed in the screenshot above, the numbering for the outputs does not start at 1 but at 3, this is because output numbering starts where the inputs stop.
So, if you have a 2*10 matrix, output numbering will start at 3 like you see here, however, if you were to have a 64*64 matrix the first output would be number 65.