FANUC Series 30i/300i/300is-MODEL A. Machining Center System. User's manual - page 134

2.OPERATIONAL DEVICES

 OPERATION 

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2.5.2 

Power Disconnection 

 

Procedure of power disconnection 

 

Procedure 

1  Check that the LED indicating the cycle start is off on the 

operator's panel. 

2  Check that all movable parts of the CNC machine tool is 

stopping. 

3  If an external input/output device such as the Handy File is 

connected to the CNC, turn off the external input/output device. 

4  Continue to press the <POWER OFF> button for about 5 

seconds. 

5 

Refer to the machine tool builder's manual for turning off the 
power to the machine. 

 

B-63944EN/03

 OPERATION 

3.MANUAL OPERATION

 

 

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3 

MANUAL OPERATION 

 
MANUAL OPERATION are twelve kinds as follows : 
 
3.1  MANUAL REFERENCE POSITION RETURN...................1030 
3.2  JOG FEED (JOG)...................................................................1032 
3.3 INCREMENTAL 

FEED.........................................................1034 

3.4  MANUAL HANDLE FEED ..................................................1036 
3.5  MANUAL ABSOLUTE ON AND OFF ................................1040 
3.6  MANUAL LINEAR/CIRCULAR INTERPOLATION .........1046 
3.7  RIGID TAPPING BY MANUAL HANDLE.........................1052 
3.8  MANUAL NUMERICAL COMMAND................................1055 
3.9  THREE-DIMENSIONAL MANUAL FEED.........................1064 
3.10 DISTANCE CODED LINEAR SCALE INTERFACE..........1080 
3.11 LINEAR SCALE WITH DISTANCE-CODED REFERENCE 

MARKS (SERIAL) ................................................................1087 

3.12 MANUAL HANDLE RETRACE ..........................................1093 
3.13 AUXILIARY FUNCTION OUTPUT BLOCK REVERSE 

MOVEMENT FOR MANUAL HANDLE RETRACE .........1108 

 

3.MANUAL OPERATION

 OPERATION 

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3.1 

MANUAL REFERENCE POSITION RETURN   

 
The tool is returned to the reference position as follows : 
The tool is moved in the direction specified in bit 5 (ZMI) of 
parameter No.1006 for each axis with the reference position return 
switch on the machine operator's panel. The tool moves to the 
deceleration point at the rapid traverse rate, then moves to the 
reference position at the FL speed. The rapid traverse rate and FL 
speed are specified in parameters Nos. 1424,1421, and 1425. 
Four step rapid traverse override is effective during rapid traverse. 
When the tool has returned to the reference position, the reference 
position return completion LED goes on. The tool generally moves 
along only a single axis, but can move along three axes 
simultaneously when specified so in bit 0 (JAX) of parameter 
No.1002. 

Deceleration point

Reference position

Rapid traverse motion
Rapid traverse rate
(rapid traverse

override is effective)

Decelerated motion

FL speed

 

Fig. 3.1 (a)    Manual reference position return 

 

Procedure for manual reference position return 

Procedure 

1  Press the reference position return switch, one of the mode 

selection switches. 

2 

To decrease the feedrate, press a rapid traverse override switch.   

3 

Press the feed axis and direction selection switch corresponding 
to the axis and direction for reference position return. Continue 
pressing the switch until the tool returns to the reference position. 
The tool can be moved along three axes simultaneously when 
specified so in an appropriate parameter setting. The tool moves 
to the deceleration point at the rapid traverse rate, then moves to 
the reference position at the FL speed set in a parameter. When 
the tool has returned to the reference position, the reference 
position return completion LED goes on. 

4 

Perform the same operations for other axes, if necessary. 

 
The above is an example. Refer to the appropriate manual provided by 
the machine tool builder for the actual operations. 

X

MIRRROR IMAGE

Y

Z

C

X2

Y2

Z2

X

Y

Z

PROGRAM

STOP

M02/

M30

MANU

ABS

SPINDLE

ORI

TAP

ATC

READY

NC? MC?

ZERO POSITION

 

Fig. 3.1 (b) 

B-63944EN/03

 OPERATION 

3.MANUAL OPERATION

 

 

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Explanation 
  - Automatically setting the coordinate system 

Bit 0 (ZPR) of parameter No.1201 is used for automatically setting the 
coordinate system. When ZPR is set, the coordinate system is 
automatically determined when manual reference position return is 
performed. 
When 

α

, 

β

 and 

γ

 are set in parameter 1250, the workpiece coordinate 

system is determined so that reference point on the tool holder or the 
position of the tip of the reference tool is X= 

α

, Y = 

β

, Z = 

γ

 when 

reference position return is performed.  This has the same effect as 
specifying the following command for reference position return:     
G92X

α

Y

β

Z

γ

; 

However, when options of the workpiece coordinate system is 
selected, it is not able to use. 
 

Limitation 
  - Moving the tool again 

Once the reference position return completion LED lights at the 
completion of reference position return, the tool does not move unless 
the reference position return switch is turned off. 
 

  - Reference position return completion LED 

The reference position return completion LED is extinguished by 
either of the following operations: 

•

 Moving from the reference position.   

•

 Entering an emergency stop state. 

 

  - The distance to return to reference position 

For the distance (Not in the deceleration condition) to return the tool 
to the reference position, refer to the manual issued by the machine 
tool builder. 
 

3.MANUAL OPERATION

 OPERATION 

B-63944EN/03

 

 

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3.2 

JOG FEED (JOG) 

 
In the jog mode, pressing a feed axis and direction selection switch on 
the machine operator's panel continuously moves the tool along the 
selected axis in the selected direction. 
The jog feedrate is specified in a parameter No.1423. 
The jog feedrate can be adjusted with the jog feedrate override dial. 
Pressing the rapid traverse switch moves the tool at the rapid traverse 
feedrate No. 1424 regardless of the position of the jog feedrate 
override dial. This function is called the manual rapid traverse. 
Manual operation is allowed for one axis at a time. 3 axes can be 
selected at a time by bit 0 (JAX) of parameter No.1002. 
 

While a switch is pressed, the tool
moves in the direction specified by
the switch.

Z

X

Y

 

Fig. 3.2 (a)    Jog Feed (JOG) 

 

Procedure for JOG feed 

Procedure 

1 

Press the jog switch, one of the mode selection switches. 

2 

Press the feed axis and direction selection switch corresponding 
to the axis and the direction where the tool is to be moved. While 
the switch is pressed, the tool moves at the feedrate specified in 
the parameter No. 1423. The tool stops when the switch is 
released. 

3 

The jog feedrate can be adjusted with the jog feedrate override 
dial. 

4 

Pressing the rapid traverse switch while pressing a feed axis and 
direction selection switch moves the tool at the rapid traverse rate 
while the rapid traverse switch is pressed. Rapid traverse 
override by the rapid traverse override switches is effective 
during rapid traverse. 

 
The above is an example.    Refer to the appropriate manual provided 
by the machine tool builder for the actual operations. 
 

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 OPERATION 

3.MANUAL OPERATION

 

 

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Explanation 
  - Manual per revolution feed 

The manual per revolution feed is enabled for jog feed by setting bit 4 
(JRV) of parameter No.1402. 
During the manual per revolution feed, the tool is jogged at the 
feedrate that is obtained by multiplying the spindle speed by the feed 
amount per revolution, which is calculated by multiplying the jog 
feedrate override value by the feed amount per revolution specified 
with the parameter (No. 1423). 
During manual per revolution feed, the tool is jogged at the following 
feedrate:  
Feed distance per rotation of the spindle (mm/rev) (specified with 
parameter No. 1423) 

×

 JOG feedrate override 

×

 actual spindle speed 

(rev/min). 
 

Limitation 
 - Acceleration/deceleration for rapid traverse 

Feedrate, time constant and method of automatic acceleration/ 
deceleration for manual rapid traverse are the same as G00 in 
programmed command. 
 

  - Change of modes 

Changing the mode to the jog mode while pressing a feed axis and 
direction selection switch does not enable jog feed. To enable jog feed, 
enter the jog mode at first, then press a feed axis and direction 
selection switch. 
 

  - Rapid traverse prior to reference position return 

If reference position return is not performed after power-on, pushing 
rapid traverse button does not actuate the rapid traverse but the 
remains at the JOG feedrate. This function can be disabled by setting 
bit 0 (RPD) of parameter No.1401. 
 

3.MANUAL OPERATION

 OPERATION 

B-63944EN/03

 

 

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3.3 

INCREMENTAL FEED 

 
In the incremental (INC) mode, pressing a feed axis and direction 
selection switch on the machine operator's panel moves the tool one 
step along the selected axis in the selected direction.  The minimum 
distance the tool is moved is the least input increment.    Each step can 
be 10, 100, or 1000 times the least input increment.     
With using bit 2 (HNT) of parameter No. 7103, each step can be 
additionally 10 times the lest input increment. 
The feedrate set in parameter No. 1423 is applied. 
By using the manual feedrate override signal, the feedrate can be 
increased or decreased. 
The tool can also be moved at the rapid traverse rate by using the 
manual rapid traverse selection signal, independent of the manual 
feedrate override signal. 

Y

X

Z

Tool

Each time a switch is
pressed, the tool moves one
step in the direction
specified by the switch.

 

Fig. 3.3 (a)    Incremental feed 

 

Procedure for incremental feed 

Procedure 

1 

Press the INC switch, one of the mode selection switches. 

2  Select the distance to be moved for each step with the 

magnification dial. 

3 

Press the feed axis and direction selection switch corresponding 
to the axis and direction the tool is to be moved.    Each time a 
switch is pressed, the tool moves one step.    The feedrate is the 
same as the jog feedrate. 

4 

Pressing the rapid traverse switch while pressing a feed axis and 
direction selection switch moves the tool at the rapid traverse 
rate. 

 

Rapid traverse override by the rapid traverse override switch is 
effective during rapid traverse. 

 
The above is an example. Refer to the appropriate manual provided by 
the machine tool builder for the actual operations. 
 

B-63944EN/03

 OPERATION 

3.MANUAL OPERATION

 

 

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Explanation 
  - Travel distance specified with a diameter 

T

 

The distance the tool travels along the X-axis can be specified with a 
diameter.