FANUC Series 30i/300i/300is-MODEL A. Machining Center System. User's manual - page 36

10.TOOL FUNCTION (T FUNCTION)

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TOOL FUNCTION (T FUNCTION)

Chapter 10, "TOOL FUNCTION (T FUNCTION)", consists of the
following sections:

10.1  TOOL SELECTION FUNCTION..........................................245
10.2  TOOL MANAGEMENT FUNCTION...................................247
10.3  TOOL MANAGEMENT EXTENSION FUNCTION ...........265
10.4  TOOL MANAGEMENT FUNCTION FOR OVERSIZE

TOOLS ...................................................................................277

10.5 TOOL LIFE MANAGEMENT ..............................................279

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10.1

TOOL SELECTION FUNCTION

By specifying an up to 8-digit numerical value following address T, a
code signal and a strobe signal are transmitted to the machine tool.
This is used to select tools on the machine.
One T code can be commanded in a block.    Refer to the machine tool
builder's manual for the number of digits commendable with address T
and the correspondence between the T codes and machine operations.
When a move command and a T code are specified in the same block,
the commands are executed in one of the following two ways:
(i)  Simultaneous execution of the move command and T function

commands.

(ii) Executing T function commands upon completion of move

command execution.

The selection of either (i) or (ii) depends on the machine tool builder's
specifications. Refer to the manual issued by the machine tool
builder for details.

Explanations

The value after the T code indicates the desired tool. Part of the
value is also used as a tool offset number that specifies the amount of
tool offset or the like. The tool can be selected as follows according
to the specification method and parameter settings.

Description of a T code (Note 1)

LGN (No.5002#1) = 0

LGN (No.5002#1) = 1

How to specify the offset number for each

parameter setting (Note 2)

The tool wear offset number is specified using
the low-order one digit of a T code.

{{{{{{{

{

↑

Tool selection Tool geometry

tool wear

offset

{{{{{{{

{

↑

Tool selection Tool wear
tool geometry offset
offset

When parameter (No.5028) is set to 1

The tool wear offset number is specified using
the low-order two digits of a T code.

{{{{{{

{{

↑

Tool selection Tool geometry

tool wear

offset

{{{{{{

{{

↑

Tool selection Tool wear
tool geometry offset
offset

When parameter (No.5028) is set to 2

The tool wear offset number is specified using
the low-order three digits of a T code.

{{{{{

{{{

↑

Tool selection Tool geometry

tool wear

offset

{{{{{

{{{

↑

Tool selection Tool wear
tool geometry offset
offset

When parameter (No.5028) is set to 3

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NOTE

1 The maximum number of digits of a T code can be

specified by parameter (No.3032) as 1 to 8.

2 When parameter (No.5028) is set to 0, the number

of digits used to specify the offset number in a T
code depends on the number of tool offsets.

Example)

When the number of tool offsets is 1 to 9:

Low-order one digit

When the number of tool offsets is 10 to 99:

Low-order two digits

When the number of tool offsets is 100 to 999:

Low-order three digits

Refer to the machine tool builder's manual for correspondence
between the T-code and the tool and the number of digit to specify
tool selection.

Example (T2+2)

N1G00X1000Z1400;
N2T0313; (Select tool No. 3 and tool offset value No. 13)
N3X400Z1050;

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10.2

TOOL MANAGEMENT FUNCTION

Overview

The tool management function totally manages tool information
including information about tool offset and tool life.

Explanation

A tool type number is specified with a T code.    The tool type number
is any number the user can define freely.  With tool type numbers,
tools can be grouped by various conditions such as life, compensation
value, and cutting conditions.    When each type is assumed to have a
single tool, tool type numbers are equivalent to unique tool numbers.
For each tool, an information storage area is prepared in the CNC
(SRAM).    This area contains information such as a tool type number,
tool life, tool status (such as a breakage condition), tool compensation
number (H, D, G, or W), spindle speed (S), cutting feedrate (F), and
freely-definable customize data. Such data is called tool
management data.
A cartridge management table that links cartridge information and tool
management data is provided so that the CNC can manage the
cartridges of the machine and tool change operations.  In addition,
areas for managing the tools in the spindle and tool standby positions
are prepared.
When a tool type number is specified using a T code command, a tool
that has the tool type number and the shortest life is searched for, and
the cartridge number and pot number of the location where the tool is
stored are output to the PMC.    Then, a tool change operation using
the cartridge number and pot number is enabled by the PMC ladder
sequence.
Tool information in the CNC is managed by the tool management data
and cartridge management table (including the spindle management
table and standby position table).

- Tool management data

As tool management data, information about each tool is registered
with a tool management data number.
The following number of sets of tool management data can be used:

Tool management function 64 sets

64 sets in total

Tool management function 240 sets

240 sets in total

Tool management function 1000 sets

1000 sets in total

NOTE

For the number of tool management data sets,
refer to the relevant manual issued by the machine
tool builder.

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- Details of data

The following details the tool management data registered for each
data number:

•

Tool type number (T code)

Item Description

Data length

4byte

Valid data range

0,1 to 99,999,999

•

Tool life counter

Item Description

Data length

4byte

Unit of data

When the number of use times is specified: Times
When time is specified: Seconds

Valid data range

When the number of use times is specified: 0 to
99,999,999 times
When time is specified: 0 to 3,599,999 s (999 hours
59 minutes 59 seconds)

The value of an increment counter, that is, the number of use times
(time) is indicated. The remaining life value is [the maximum tool
life value minus tool life counter value].

•

Maximum tool life value

Item Description

Data length

4byte

Unit of data

When the number of use times is specified: Times
When time is specified: Seconds

Valid data range

When the number of use times is specified: 0 to
99,999,999 times
When time is specified: 0 to 3,599,999 s (999 hours
59 minutes 59 seconds)

•

Notice life value

Item Description

Data length

4byte

Unit of data

When the number of use times is specified: Times
When time is specified: Seconds

Valid data range

When the number of use times is specified: 0 to
99,999,999 times
When time is specified: 0 to 3,599,999 s (999 hours
59 minutes 59 seconds)

If a value other than 0 is set, the tool life expiration notice signal
TLCHB <F064.3> or TLCHBx <F329.4 to 7> is output when the
remaining life value of the tool (= maximum tool life value minus tool
life counter value) has reached the set value.

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•

Tool life status

Item Description

Data length

1byte

Detail data

0: Life management is not performed.
1: Tool not yet used
2: Life remains.
3: Life expired.
4: Tool breakage (skip)

The machine (PMC) determines tool breakage and stores
corresponding information through the window. In tool management
of the CNC, a broken tool is regarded as being equivalent to tools
whose lives have expired.

•

Tool

information

Item Description

Data length

1 byte (flag data)

#0 RGS

0: Tool management data is invalid. (-)
1: Tool management data is valid. (R)

#1 TIM

0: Type for counting the number of use times (C)
1: Type for counting time (T)

#2 BDT

0: Normal tool (N)
1: Oversize tool (B)

#3 LOC

0: Data accessible (U)
1: Data not accessible (L)

#4 SEN

When the tool life status indicates that tool
management is not performed:
0: This tool is not searched. (-).
1: This tool is searched. (S)

#5 to #7

Reserved

When RGS is set to 0 in tool management data, the tool management
data is regarded as not being registered even when values are set for
other items.

NOTE

Make sure you specify the same life count type for
all tools of the same type. You can check tools of
the same type for any difference in life count type,
using the "check function."

•

Tool length compensation number (H)

Item Description

Data length

2byte

Valid data range

0 to 999

•

Cutter compensation number (D)

Item Description

Data length

2byte

Valid data range

0 to 999

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•

Tool geometry compensation number (G)

Item Description

Data length

2byte

Valid data range

0 to 999

•

Tool wear compensation number (W)

Item Description

Data length

2byte

Valid data range

0 to 999

NOTE

When the machine control type is the combined
system type, tool length compensation and cutter
compensation numbers are used for paths for the
machining center system, and for paths for the
lathe system, tool geometry compensation and tool
wear compensation numbers are used.

•

Spindle speed (S)

Item Description

Data length

4byte

Unit of data

min

-1

Valid data range

1 to 99,999

•

Feedrate

(F)

Item Description

Data length

4byte

Unit of data

mm/min, inch/min, deg/min, mm/rev, inch/rev

Valid data range

0 to 99,999,999

As additional tool management data, areas for setting customize data
(5 data items including customize data 0 and customize data 1 to 4)
are provided without defining specific usage. The user can use these
customize data areas freely to set a warning life value, cutting
resistance, override value, spindle current value, maximum and
minimum S/F, and other items according to the targeted application.

•

Customize data 0

Item Description

Data length

1 byte (bit type)

Valid data range

0 or 1 on a bit-by-bit basis

•

Customize data 1 to 4 (to 20) (to 40)

Item Description

Data length

4byte

Valid data range

-99,999,999 to 99,999,999

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NOTE

For the maximum number of tool management
function customization data items, refer to the
relevant manual issued by the machine tool builder.

- Cartridge management table

The storage status of tools in cartridges is managed with the cartridge
management table.

•

Multiple cartridge numbers can be defined. (Numbers from 1 to
4, up to four cartridges)

•

The maximum number of pots for all cartridges is 64, 240, or
1000, which depends on whether a tool management data option
is selected.

•

Cartridge numbers and pot numbers can be assigned freely

within cartridge management data by parameter setting
(described later).

•

The tool management data number adjacent to a pot number is
linked with tool data defined in the tool management table.
Therefore, the tool attached to the pot is indicated.

•

Zero set as a data number indicates that no tool is attached.

•

The cartridge management table can be read from and written to
through the PMC window and FOCAS2

•

The spindle management table and standby position table are
provided to indicate special cartridge positions.

•

Spindle positions and standby positions, regarded as special

cartridge positions, have fixed cartridge numbers 11 to 14 (the
positions of the first to fourth spindles) and 21 to 24 (the first to
fourth standby positions).

•

With the PMC window, the spindle position table and standby
position table can be read from and written to.

•

Tool life counting is performed only for the tools at the spindle
positions.

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