CNC lathe country code

NC lathe preparation function G-code (JB3208-83), G-code (or G instruction) is a process instruction that needs to be specified in advance before the interpolation operation of the NC machine tool system to prepare for the interpolation operation, such as: coordinate plane selection, interpolation method designation, hole processing and other fixed cycle function designation. The G-code is composed of the address G followed by two digits. G00~G99 is commonly used. Some modern CNC machine tool systems have expanded to three digits. G-code is divided into modal code and non modal code according to functional category. a. In 9 groups, such as c, d,...... J, k, etc., the G-code corresponding to the same group is called the modal code, which means that once a G-code (such as G17 in group c) is specified, the function remains invalid until any other code in the same group (such as G18 or G19) appears, otherwise it remains valid. So when compiling the next program segment, if the same G-code needs to be used, it can be omitted, so that processing programming can be simplified. Non modal code is only valid in this program segment.
Note: 1. All G-code indicated by lowercase letters a, b, c, d,... are the same group of codes, which are called modal commands;
2. '#' represents that if selected for a special purpose, it must be specified in the program format description;
3. The letter (d) in parentheses in the second column can be cancelled or replaced by the letter d without parentheses in the same column, or by the letter (d) with parentheses;
4. The codes "not specified" and "never specified" respectively indicate that new functions can be specified and never specified when revising the standard in the future;
5. When the CNC system does not have G53 to G59, G63 functions, it can be designated for other purposes.