Roland GR-640 User Manual page 252

Perform steps 3 to 13 in "Cutting in Tool Mode
(2)."
Even if you perform all the steps up to step 13 in
cutting will not start.
To start cutting, perform step 4 shown below.
When the screen shown in the figure below is
displayed, send data from the computer.
When the machine receives the data, it starts cutting.
Remove the cut material.
Remove the material to complete the cutting procedure.
Removing the Material
Cutting in Tool Mode (2),