It depends on what system you use.
Generally, simple numerical control can operate as long as the cylinder stroke and rear retaining size are set.
If you want to bend multiple steps, you can set the size required for each step of bending according to the operation methods of different systems, and the system runs circularly;
If it is a fully CNC electro-hydraulic servo press brake, the selected upper and lower dies, material thickness, material, length, bending mode, angle and rear retaining size shall be set. According to different needs, the speed change point position, return height, pressure holding time, deflection compensation and other parameters can also be set.
Each system operation is different, so it can’t be generalized. I hope it can be helpful to you
