It was this code:
my problem is to add another moving part (column) to Z axis.
I am not sure about the order of parts and axis description you now.
<machine xmlns="x-schema:PowermillMachineTool">
<!-- Where things are attached to the machine -->
<table_attach_point PART="table" X="0" Y="0" Z="0" />
<head_attach_point PART="head" X="0" Y="145" Z="107" I="0" J="0" K="1" />
<!-- The static bits -->
<machine_part>
<model_list>
<dmt_file>
<path FILE="EC1600/Gestell.dmt" />
<rgb R="100" G="100" B="200" />
</dmt_file>
</model_list>
</machine_part>
<!-- The table -->
<machine_part>
<axis>
<control_info ADDRESS="X" VALUE="0" MIN="-813" MAX="813" />
<simple_linear I="-1" J="0" K="0" />
</axis>
<model_list>
<dmt_file>
<path FILE="EC1600/Tisch.dmt" />
<rgb R="255" G="255" B="255" />
</dmt_file>
</model_list>
<machine_part NAME="table" />
</machine_part>
<!-- The head -->
<machine_part>
<axis>
<control_info ADDRESS="Y" VALUE="0" MIN="0" MAX="1270" />
<simple_linear I="0" J="1" K="0" />
</axis>
<machine_part>
<axis>
<control_info ADDRESS="Z" VALUE="0" MIN="0" MAX="813" />
<simple_linear I="0" J="0" K="1" />
</axis>
<model_list>
<dmt_file>
<path FILE="EC1600/Kopf.dmt" />
<rgb R="100" G="100" B="120" />
</dmt_file>
</model_list>
<machine_part NAME="head" />
</machine_part>
</machine_part>
</machine>