Hey Michael,
yes, and this is because the g-code you find in the ‘tool-change’ field of General Configuration Tab of the Onefinity Controller often contains only a default code that is not usable (does not raise Z high enough). Therefore you might try out one of the examples shown→ here instead.
This is not necessary since you can use a g-code in the ‘tool-change’ field to raise Z and allow for a tool change – see above.
Also in program mode, you cannot start a manual zeroing.
But there is a probe command in the g-code example for the ‘tool-change’ field, so probing Z would be done at the right moment.