FANUC Series 0i-MODEL F Plus. CONNECTION MANUAL (FUNCTION) - page 1

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SAFETY PRECAUTIONS

 

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SAFETY PRECAUTIONS 

This section describes the safety precautions related to the use of CNC units.   
It is essential that these precautions be observed by users to ensure the safe operation of machines 
equipped with a CNC unit (all descriptions in this section assume this configuration). Note that some 
precautions are related only to specific functions, and thus may not be applicable to certain CNC units. 
Users must also observe the safety precautions related to the machine, as described in the relevant manual 
supplied by the machine tool builder. Before attempting to operate the machine or create a program to 
control the operation of the machine, the operator must become fully familiar with the contents of this 
manual and relevant manual supplied by the machine tool builder. 
 

DEFINITION OF WARNING, CAUTION, AND NOTE 

This manual includes safety precautions for protecting the user and preventing damage to the machine. 
Precautions are classified into 

Warning

  and 

Caution

  according to their bearing on safety. Also, 

supplementary information is described as a 

Note

. Read the 

Warning

, 

Caution

, and 

Note

 thoroughly 

before attempting to use the machine. 
 

  WARNING 

 

Used if a danger resulting in the death or serious injury of the user is expected to 
occur if he or she fails to observe the approved procedure. 

 

  CAUTION 

 

Used if a danger resulting in the minor or moderate injury of the user or 
equipment damage is expected to occur if he or she fails to observe the 
approved procedure. 

 

NOTE 

 

Used if a supplementary explanation not related to any of WARNING, and 
CAUTION is to be indicated. 

 

•

 

Read this manual carefully, and store it in a safe place. 

 

SAFETY PRECAUTIONS

 

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GENERAL WARNINGS AND CAUTIONS 

  WARNING 

1  Never attempt to machine a workpiece without first checking the operation of the 

machine. Before starting a production run, ensure that the machine is operating 
correctly by performing a trial run using, for example, the single block, feedrate 
override, or machine lock function or by operating the machine with neither a tool 
nor workpiece mounted. Failure to confirm the correct operation of the machine 
may result in the machine behaving unexpectedly, possibly causing damage to 
the workpiece and/or machine itself, or injury to the user. 

2  Before operating the machine, thoroughly check the entered data. 
 

Operating the machine with incorrectly specified data may result in the machine 
behaving unexpectedly, possibly causing damage to the workpiece and/or 
machine itself, or injury to the user. 

3  Ensure that the specified feedrate is appropriate for the intended operation. 

Generally, for each machine, there is a maximum allowable feedrate.   

 

The appropriate feedrate varies with the intended operation. Refer to the manual 
provided with the machine to determine the maximum allowable feedrate.   

 

If a machine is run at other than the correct speed, it may behave unexpectedly, 
possibly causing damage to the workpiece and/or machine itself, or injury to the 
user. 

4  When using a tool compensation function, thoroughly check the direction and 

amount of compensation.   
Operating the machine with incorrectly specified data may result in the machine 
behaving unexpectedly, possibly causing damage to the workpiece and/or 
machine itself, or injury to the user. 

5  The parameters for the CNC and PMC are factory-set. Usually, there is not need 

to change them. When, however, there is not alternative other than to change a 
parameter, ensure that you fully understand the function of the parameter before 
making any change. 

 

Failure to set a parameter correctly may result in the machine behaving 
unexpectedly, possibly causing damage to the workpiece and/or machine itself, 
or injury to the user. 

 

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SAFETY PRECAUTIONS

 

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  CAUTION 

1  Immediately after switching on the power, do not touch any of the keys on the 

MDI unit until the position display or alarm screen appears on the CNC unit. 

 

Some of the keys on the MDI unit are dedicated to maintenance or other special 
operations. Pressing any of these keys may place the CNC unit in other than its 
normal state. Starting the machine in this state may cause it to behave 
unexpectedly. 

2  The OPERATOR’S MANUAL and programming manual supplied with a CNC 

unit provide an overall description of the machine's functions. Note that the 
functions will vary from one machine model to another. Therefore, some 
functions described in the manuals may not actually be available for a particular 
model. Check the specification of the machine if in doubt. 

3  Some functions may have been implemented at the request of the machine-tool 

builder. When using such functions, refer to the manual supplied by the 
machine-tool builder for details of their use and any related cautions. 

4  The liquid-crystal display is manufactured with very precise fabrication 

technology. Some pixels may not be turned on or may remain on. This 
phenomenon is a common attribute of LCDs and is not a defect. 

 

NOTE 

 

Programs, parameters, and macro variables are stored in non-volatile memory in 
the CNC unit. Usually, they are retained even if the power is turned off.   

 

Such data may be deleted inadvertently, however, or it may prove necessary to 
delete all data from non-volatile memory as part of error recovery. 

 

To guard against the occurrence of the above, and assure quick restoration of 
deleted data, backup all vital data, and keep the backup copy in a safe place. 
The number of times to write machining programs to the non-volatile memory is 
limited. 
You must use "High-speed program management" when registration and the 
deletion of the machining programs are frequently repeated in such case that the 
machining programs are automatically downloaded from a personal computer at 
each machining. 
In "High-speed program management", the program is not saved to the 
non-volatile memory at registration, modification, or deletion of programs. 

 

SAFETY PRECAUTIONS

 

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WARNINGS AND CAUTIONS RELATED TO PROGRAMMING 

This section covers the major safety precautions related to programming. Before attempting to perform 
programming, read the supplied OPERATOR’S MANUAL carefully such that you are fully familiar with 
their contents. 
 

  WARNING 

1 

Coordinate system setting

 

 

If a coordinate system is established incorrectly, the machine may behave 
unexpectedly as a result of the program issuing an otherwise valid move 
command. Such an unexpected operation may damage the tool, the machine 
itself, the workpiece, or cause injury to the user. 

2 

Positioning by nonlinear interpolation

 

 

When performing positioning by nonlinear interpolation (positioning by nonlinear 
movement between the start and end points), the tool path must be carefully 
confirmed before performing programming. Positioning involves rapid traverse. If 
the tool collides with the workpiece, it may damage the tool, the machine itself, 
the workpiece, or cause injury to the user. 

3 

Function involving a rotation axis

 

 

When programming normal-direction (perpendicular) control, pay careful 
attention to the speed of the rotation axis. Incorrect programming may result in 
the rotation axis speed becoming excessively high, such that centrifugal force 
causes the chuck to lose its grip on the workpiece if the latter is not mounted 
securely. Such mishap is likely to damage the tool, the machine itself, the 
workpiece, or cause injury to the user. 

4 

Inch/metric conversion

 

 

Switching between inch and metric inputs does not convert the measurement 
units of data such as the workpiece origin offset, parameter, and current 
position. Before starting the machine, therefore, determine which measurement 
units are being used. Attempting to perform an operation with invalid data 
specified may damage the tool, the machine itself, the workpiece, or cause injury 
to the user. 

5 

Constant surface speed control

 

 

When an axis subject to constant surface speed control approaches the origin of 
the workpiece coordinate system, the spindle speed may become excessively 
high. Therefore, it is necessary to specify a maximum allowable speed. 
Specifying the maximum allowable speed incorrectly may damage the tool, the 
machine itself, the workpiece, or cause injury to the user. 

6 

Stroke check

 

 

After switching on the power, perform a manual reference position return as 
required. Stroke check is not possible before manual reference position return is 
performed. Note that when stroke check is disabled, an alarm is not issued even 
if a stroke limit is exceeded, possibly damaging the tool, the machine itself, the 
workpiece, or causing injury to the user. 

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  WARNING 

7 

Tool post interference check

 

 

A tool post interference check is performed based on the tool data specified 
during automatic operation. If the tool specification does not match the tool 
actually being used, the interference check cannot be made correctly, possibly 
damaging the tool or the machine itself, or causing injury to the user. After 
switching on the power, or after selecting a tool post manually, always start 
automatic operation and specify the tool number of the tool to be used. 

8 

Same address command in same block

 

 

The G code or M code including the same address cannot be commanded on 
the same block. If you use the same address, it may result in the machine 
behaving unexpectedly, possibly causing damage to the workpiece and/or 
machine itself, or injury to the user. Command on separate block.

（

About 

address P, refer to the appendix “List of functions include address P in the 
program command”

）

 

 

  CAUTION 

1 

Absolute/incremental mode

 

 

If a program created with absolute values is run in incremental mode, or vice 
versa, the machine may behave unexpectedly. 

2 

Plane selection

 

 

If an incorrect plane is specified for circular interpolation, helical interpolation, or 
a canned cycle, the machine may behave unexpectedly. Refer to the 
descriptions of the respective functions for details. 

3 

Torque limit skip

 

 

Before attempting a torque limit skip, apply the torque limit. If a torque limit skip 
is specified without the torque limit actually being applied, a move command will 
be executed without performing a skip. 

4 

Programmable mirror image

 

 

Note that programmed operations vary considerably when a programmable 
mirror image is enabled. 

5 

Compensation function

 

 

If a command based on the machine coordinate system or a reference position 
return command is issued in compensation function mode, compensation is 
temporarily canceled, resulting in the unexpected behavior of the machine. 

 

Before issuing any of the above commands, therefore, always cancel 
compensation function mode. 

 

SAFETY PRECAUTIONS

 

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WARNINGS AND CAUTIONS RELATED TO HANDLING 

This section presents safety precautions related to the handling of machine tools. Before attempting to 
operate your machine, read the supplied OPERATOR’S MANUAL carefully, such that you are fully 
familiar with their contents. 
 

  WARNING 

1 

Manual operation

 

 

When operating the machine manually, determine the current position of the tool 
and workpiece, and ensure that the movement axis, direction, and feedrate have 
been specified correctly. Incorrect operation of the machine may damage the 
tool, the machine itself, the workpiece, or cause injury to the operator. 

2 

Manual reference position return

 

 

After switching on the power, perform manual reference position return as 
required.   
If the machine is operated without first performing manual reference position 
return, it may behave unexpectedly. Stroke check is not possible before manual 
reference position return is performed. 
An unexpected operation of the machine may damage the tool, the machine 
itself, the workpiece, or cause injury to the user. 

3 

Manual handle feed

 

 

In manual handle feed, rotating the handle with a large scale factor, such as 100, 
applied causes the tool and table to move rapidly. Careless handling may 
damage the tool and/or machine, or cause injury to the user. 

4 

Disabled override

 

 

If override is disabled (according to the specification in a macro variable) during 
threading, rigid tapping, or other tapping, the speed cannot be predicted, 
possibly damaging the tool, the machine itself, the workpiece, or causing injury 
to the operator. 

5 

Origin/preset operation

 

 

Basically, never attempt an origin/preset operation when the machine is 
operating under the control of a program. Otherwise, the machine may behave 
unexpectedly, possibly damaging the tool, the machine itself, the tool, or causing 
injury to the user. 

6 

Workpiece coordinate system shift

 

 

Manual intervention, machine lock, or mirror imaging may shift the workpiece 
coordinate system. Before attempting to operate the machine under the control 
of a program, confirm the coordinate system carefully. 
If the machine is operated under the control of a program without making 
allowances for any shift in the workpiece coordinate system, the machine may 
behave unexpectedly, possibly damaging the tool, the machine itself, the 
workpiece, or causing injury to the operator. 

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  WARNING 

7 

Software operator's panel and menu switches

 

 

Using the software operator's panel and menu switches, in combination with the 
MDI unit, it is possible to specify operations not supported by the machine 
operator's panel, such as mode change, override value change, and jog feed 
commands. 

 

Note, however, that if the MDI unit keys are operated inadvertently, the machine 
may behave unexpectedly, possibly damaging the tool, the machine itself, the 
workpiece, or causing injury to the user. 

8 

RESET key 

 

Pressing the RESET key stops the currently running program. As a result, the 
servo axes are stopped. However, the RESET key may fail to function for 
reasons such as an MDI unit problem. So, when the motors must be stopped, 
use the emergency stop button instead of the RESET key to ensure security. 

 

  CAUTION 

1 

Manual intervention

 

 

If manual intervention is performed during programmed operation of the 
machine, the tool path may vary when the machine is restarted. Before 
restarting the machine after manual intervention, therefore, confirm the settings 
of the manual absolute switches, parameters, and absolute/incremental 
command mode. 

2 

Feed hold, override, and single block

 

 

The feed hold, feedrate override, and single block functions can be disabled 
using custom macro system variable #3004. Be careful when operating the 
machine in this case. 

3 

Dry run

 

 

Usually, a dry run is used to confirm the operation of the machine. During a dry 
run, the machine operates at dry run speed, which differs from the 
corresponding programmed feedrate. Note that the dry run speed may 
sometimes be higher than the programmed feed rate. 

4 

Program editing

 

 

If the machine is stopped, after which the machining program is edited 
(modification, insertion, or deletion), the machine may behave unexpectedly if 
machining is resumed under the control of that program. Basically, do not 
modify, insert, or delete commands from a machining program while it is in use. 

 

SAFETY PRECAUTIONS

 

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WARNINGS RELATED TO PARAMETERS 

  WARNING 

1  When machining a workpiece for the first time after modifying a parameter, close 

the machine cover. Never use the automatic operation function immediately after 
such a modification. Instead, confirm normal machine operation by using 
functions such as the single block function, feedrate override function, and 
machine lock function, or by operating the machine without mounting a tool and 
workpiece. If the machine is used before confirming that it operates normally, the 
machine may move unpredictably, possibly damaging the machine or workpiece, 
and presenting a risk of injury. 

2  The CNC and PMC parameters are set to their optimal values, so that those 

parameters usually need not be modified. When a parameter must be modified 
for some reason, ensure that you fully understand the function of that parameter 
before attempting to modify it. If a parameter is set incorrectly, the machine may 
move unpredictably, possibly damaging the machine or workpiece, and 
presenting a risk of injury. 

 

WARNINGS RELATED TO EDIT SCREENS FOR TOUCH PANEL 

  WARNING 

 

FANUC’s touch panel is an analog resistive film type. When two or more points 
are pressed at the same time, there is a possibility that it behaves as if the 
center of these points was pressed, and this wrong output or malfunction may 
cause an accident. Do not create a virtual machine operator’s panel screens on 
which two or more points are pressed at the same time for touch panel 
operation. 
 
On the virtual machine operator panel screen, never support safety-related 
operations that may lose human life or may cause serious damage, or real-time 
operations such as emergency stop, program start, program stop, axis 
movements, etc.    If there is a failure in the CNC, peripheral units, or cable, 
wrong outputs or malfunctions may cause an accident.    In addition, real-time 
operation is not guaranteed on the touch panel screen.