I have a quick question. Is there an easy way to define a node in a segment but refering to the global coordinate system. I want the node-axes to have the same ordientation as the global refFrame. Or do I have to make a coordinate transformation?
That depends on what you are trying to achieve by doing this? Do you want a node to be oriented in certain way all the time? Or just for the loading position?
If the latter one - yes, you can construct a transformation, which would compute it.
If the first one - you can make a virtual segment that is attached to the node, but drive it to be in a certain orientation wrt. global.
I hope I am clear. If not - could you please describe your goals a bit better?