The T function is used to select a tool in the program. The setting in this machine data determines whether the new tool is loaded immediately on execution of the T function:
MD: TOOL_CHANGE_MODE = 0
The new tool is loaded immediately on execution of the T function. This setting is used mainly on turning machines with tool turrets.
MD: TOOL_CHANGE_MODE = 1
The new tool is prepared for loading on execution of the T function. This setting is used mainly on milling machines with a tool magazine, in order to bring the new tool into the tool change position without interrupting the machining process. The M function entered in MD 22560:
TOOL_CHANGE_M_CODE is used to remove the old tool from the spindle and load the new tool onto the spindle. This tool change is required to be programmed with the M function M06, in accordance with DIN 66025.
关于这段对22550的说明里，为0表示立即执行刀程序，为1表示将刀准到换到位
然后用M6（DIN 66025标准）执行换刀
我主要疑问在于，M6在这里起了什么作用？如我一楼所说，不用M6也能完成换刀。
在FB1里，提到了M6是激活刀具参数用？