Ok basically there are software limits set within the syntec parameters of your machine
The error basically states that what your program is telling the machine to do is outside of the limits the machine has set.
In this case the program is telling the machine to raise the tool about the highest point of the Z axis
It could be that you have your safety moving position set wrong in the program you are designing with, and before it starts it is telling you to move the spindle too high, a point to far above the material
In basic terms it is based on the coordinates, Machine coordinates are measured from the home position of the machine, ie: the machine zero for Z axis is the highest point the spindle can sit, your material maybe be set to -145 in the machine position, effectively this means that the spindle would know the material is located 145mm below the home position of the machine.
Obviously before you start any job you set the material offset positions, X , Y, and Z
These offsets become your absolute zero positions of where the job is to start from, your program will move so much down and so much to the right and so much up and down the table. all of this information comes from the program ( G-Code ) that you producedusing your design program and output using your post processor.
all this being said the likely causes of your problems are
A. Offsets set incorrectly, not latched into the G-54 positions, latched to the external shift instead
B. Table height parameters or tool height settings set incorrectly.
C. Safe Z or Rapid move height set too high in the program
D. Post processor incorrectly formatted causing it to set the wrong positions or not correctly allow for the heights of the tools
In order to help you any further with this would need to see one of your output G-Codes or perhaps check some of your settings
I currently work for Speedy Signs Dunedin at present, in Dunedin, New Zealand
Cheers
Lee ( SyntecLee )