The invention relates to the technical field of 
laser cutting, and specifically relates to a 
control system based on multi-axis synchronous movement of an 
EtherCAT bus, for a 
laser cutting head. The 
control system based on the multi-axis synchronous movement of the 
EtherCAT bus, for the 
laser cutting head is characterized in that a 
signal end of an 
EtherCAT main 
station is bidirectionally connected with a motor driver for the 
laser cutting head; a 
signal output end of a PD controller is connected with a 
signal input end of an EtherCAT communication controller through a communication line; theEtherCAT communication controller is bidirectionally connected with a first main control 
board processor through a communication line; the first main control 
board processor is bidirectionally connected with a second main control 
board processor through a communication line; the second main control board processor is bidirectionally connected with a lens 
motor controller through ports separately;and the first main control board processor is bidirectionally connected with a sensor control board through a line port P18. Compared with the prior art, a whole 
laser cutting process is dynamically monitored and corresponding key process parameters are collected by virtue of an EtherCAT 
bus technology, any manual intervention is not needed, and a spot 
diameter size, a focus position and other parameters are automatically adjusted.