G5.1Q1 is a commonly used instruction in the FANUC system of the CNC machining center. G5.1Q1 is an AI contour control/nano smoothing/smooth interpolation instruction, which means high-speed and high-precision function. This instruction is mostly used for straight line approximation curve surface processing, that is, many close points are connected. The following is a summary of common problems about the G5.1Q1 instruction.

1. The program plus G5.1Q1 in the FANUC 0i system does not work. You need to open the parameters: In MDI mode, press the function key [SYSTEM] and press the right key -> 5 times. [PRMTUN] appears. Press this soft key, and the "Parameter Help Setting Menu" appears. Select the high-precision setting item and press [Execute Key]. You can try it, it may be useful. It can effectively improve the machining accuracy.

2. High-speed and high-precision machining starts with G5.1Q1, and G5.1Q0 turns it off. G5.1Q1 means continuous machining. When G5.1Q1 is used, you need to add G5.1Q0 before the end of the program to end the high-speed machining mode, and no alarm will appear. Continuous means that when the machine tool is moving the tool, it will stop and start when G5.1Q1 is not added, and it will be continuous after adding it; the advance control is to make the machine tool more stable during machining. After G05.1G1 is added to the program, multiple program sentences will be pre-read, and acceleration and deceleration can be accelerated in advance, making the machining more stable.