I'm not the expert but I think these lines in your HAL need to be removed as gmoccapy has not finished loading when the HAL is executed and that's why the pin does not yet exist. That is what the "gmoccapy_postgui.hal" file is for.
Code:
# ink zu gmoccapy toolchange, damit Sie den Vorteil der Werkzeugbeschreibung auf change dialo
net tool-change gmoccapy.toolchange-change <= iocontrol.0.tool-change
net tool-changed gmoccapy.toolchange-changed <= iocontrol.0.tool-changed
net tool-prep-number gmoccapy.toolchange-number <= iocontrol.0.tool-prep-number
net tool-prep-loop iocontrol.0.tool-prepare <= iocontrol.0.tool-prepared
In your gmoccapy_postgui.hal you seem to have pretty much the same thing already.
[edit]
Except for the tool-prep loop. If that is needed it belongs in the postgui file as well.
