FANUC Series 30i/300i/300is-MODEL A. Machining Center System. User's manual - page 128

B-63944EN/03

 OPERATION 

1.GENERAL

 

 

- 981 - 

1 

GENERAL 

 
Chapter 1, "GENERAL", consists of the following sections: 
 
1.1 MANUAL OPERATION..........................................................982 
1.2  TOOL MOVEMENT BY PROGRAMING - AUTOMATIC 

OPERATION ............................................................................984 

1.3 AUTOMATIC OPERATION ...................................................986 
1.4  TESTING A PROGRAM .........................................................988 
1.5  EDITING A PROGRAM ..........................................................990 
1.6  DISPLAYING AND SETTING DATA....................................991 
1.7 DISPLAY..................................................................................994 
1.8  ADJUSTMENT OF THE BRIGHTNESS OF THE 

MONOCHROME LCD ............................................................997 

 
 

1.GENERAL

 OPERATION 

B-63944EN/03

 

 

- 982 - 

1.1 

MANUAL OPERATION 

 

Explanation 
  - Manual reference position return 

The CNC machine tool has a position used to determine the machine 
position. 
This position is called the reference position, where the tool is 
replaced or the coordinate are set.  Ordinarily, after the power is 
turned on, the tool is moved to the reference position. 
Manual reference position return is to move the tool to the reference 
position using switches and pushbuttons located on the operator's 
panel. (See Section III-3.1) 

Reference position

Tool

Machine operator's panel

 

Fig. 1.1 (a)    Manual reference position return 

 
The tool can be moved to the reference position also with program 
commands. 
This operation is called automatic reference position return (See 
Section II-6). 

B-63944EN/03

 OPERATION 

1.GENERAL

 

 

- 983 - 

  - The tool movement by manual operation 

Using machine operator's panel switches, pushbuttons, or the manual 
handle, the tool can be moved along each axis. 

Tool

Workpiece

Machine operator's panel

Manual pulse
generator

 

Fig. 1.1 (b)    The tool movement by manual operation 

 
The tool can be moved in the following ways: 
(i)  Jog feed (See Section III-3.2) 
 

The tool moves continuously while a pushbutton remains 
pressed. 

(ii)  Incremental feed (See Section III-3.3) 
 

The tool moves by the predetermined distance each time a button 
is pressed. 

(iii)  Manual handle feed (See Section III-3.4) 
 

By rotating the manual handle, the tool moves by the distance 
corresponding to the degree of handle rotation. 

 

1.GENERAL

 OPERATION 

B-63944EN/03

 

 

- 984 - 

1.2 

TOOL MOVEMENT BY PROGRAMING - AUTOMATIC 
OPERATION 

 
Automatic operation is to operate the machine according to the created 
program. It includes memory, MDI and DNC operations. (See Section 
III-4). 

 

Program 

Tool 

01000 ; 
M S T ; 
G92 X      ; 
G00   ; 
G01     ; 
 : 
 : 
 : 

 

Fig. 1.2 (a)    Tool Movement by programming 

 

Explanation 
 - Memory operation 

After the program is once registered in memory of CNC, the machine 
can be run according to the program instructions. This operation is 
called memory operation. 

CNC

Machine

Memory

 

Fig. 1.2 (b)    Memory operation 

B-63944EN/03

 OPERATION 

1.GENERAL

 

 

- 985 - 

 - MDI operation 

After the program is entered, as an command group, from the MDI 
keyboard, the machine can be run according to the program.  This 
operation is called MDI operation. 

CNC MDI keyboard

Machine

Manual program
input

 

Fig. 1.2 (c)    MDI operation 

 

 - DNC operation 

In this mode of operation, the program is not registered in the CNC 
memory. It is read from the external input/output devices instead.  
This is called DNC operation. 

1.GENERAL

 OPERATION 

B-63944EN/03

 

 

- 986 - 

1.3 

AUTOMATIC OPERATION 

 

Explanation 
 - Program selection 

Select the program used for the workpiece.    Ordinarily, one program 
is prepared for one workpiece. If two or more programs are in memory, 
select the program to be used, by searching the program number 
(Section III-9.3). 

 

Programs in memory 

Search for desired program by
file name or program number. 

Automatic 
operation

M30

G92

O1001 

 

Fig. 1.3 (a)    Program selection for automatic operation 

 

  - Start and stop   

Pressing the cycle start pushbutton causes automatic operation to start. 
By pressing the feed hold or reset pushbutton, automatic operation 
pauses or stops. By specifying the program stop or program 
termination command in the program, the running will stop during 
automatic operation. When one process machining is completed, 
automatic operation stops. (See Section III-4) 

 

Cycle start

Start

Feed hold 
Reset 

Automatic 
operation 

Program stop
Program end 

Stop caused   
by program 

Stop

 

Fig. 1.3 (b)    Start and stop for automatic operation 

B-63944EN/03

 OPERATION 

1.GENERAL

 

 

- 987 - 

 - Handle interruption  

While automatic operation is being executed, tool movement can 
overlap automatic operation by rotating the manual handle. (See 
Section III-4.4) 

 

Z

X 

Programmed 
depth of cut 

Tool position after 
handle interruption 

Tool position 
during automatic 
operation 

Depth of cut 
by handle 
interruption

 

Fig. 1.3 (c)    Handle interruption for automatic operation