In the program input operation of the CNC machine tool, if the manual data input method is used to input into the CNC, the operation, editing and modification are inconvenient; the second is that the CNC memory is small, and the program cannot be input when the program is large. To do this, we must do this by transmitting (the serial port between the computer and the CNC CNC, the DNC function).
First, the serial line connection
1. Huazhong system serial line connection
Figure 1 9-hole serial interface and 25-pin serial interface number
The DNC of Huazhong System CNC machine tool adopts two 9-hole plugs (the serial port number is shown in Figure 1. One is connected with COM1 or COM2 of the computer, and the other is connected with the communication interface of CNC machine). The welding relationship of CNC lathe is shown in Figure 2. CNC milling machines and machining centers use 1, 9 empty, and other one-to-one welding.
Figure 2 welding relationship of 9-hole serial port
2. FANUC system serial line connection
The DNC of the FANUC system CNC machine tool is connected by a 9-pin plug (connected to COM1 or COM2 of the computer) and a 25-pin plug (connected to the communication interface of the CNC machine). The number of the 25-pin serial interface is shown in Figure 1. The welding relationship between the 9-pin serial port and the 25-pin serial port is shown in Figure 3.
Figure 3 welding relationship between 9-hole serial port and 25-pin serial port
3.Siemens system serial line connection
The DNC of the Siemens system CNC machine tool is the same as that of the Huazhong system CNC lathe (Fig. 2).
Second, the program format
1. Central China System
(1) Programming the program Write the program in Notepad.
(2) Program format
%×××× (The number within four digits constitutes the program name. × is the number, the same below)
... (the following is the programmed block)
...
(3) The program file name saved in the folder is O×××× (“O†is English).
2.FANUC system
(1) Programming the program Write the program in Notepad or in the CNC-EDIT, NC Sentry transmission software.
(2) Program format
%
:×××× (The number within four digits constitutes the program name. The preceding colon ":" can also be changed to the English "O", and after transmission to the CNC system, it is "O××××")
... (the following is the programmed block)
...
%
(3) The name of the program file saved to the folder can be given arbitrarily (preferably in English or numeric).
3.Siemens system
(1) Programming the program Write the program in Notepad or in the CNC-EDIT, NC Sentry transmission software.
(2) Program format
%_N_△△××××××_MPF (The program name is composed of the first two letters and the following half-width characters such as underscores and letters. △ is a letter. The subroutine can start with L and add 7 digits. The number of the program is composed of the number, MPF is changed to SPF)
;$PATH=/_N_MPF_DIR
... (the following is the programmed block)
...
(3) The name of the program file saved to the folder can be given arbitrarily (preferably in English or numeric).
(3) Transmission software introduction and transmission operation
Figure 4 Huazhong DNC page
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