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9/Series CNC Lathe. Operation and Programming Manual - page 7

Chapter 7

Running a Program

7.2

Before selecting a part program, you must tell the control where this part

program is currently residing. There are 3 options here:

Selecting a Part

Program

Input Device

the program can be resident in the control’s memory

the program can be resident on a peripheral device attached to port A

such as a tape reader (refer to system installers documentation)

the program can be resident on a peripheral device attached to port B

such as a taper reader (refer to system installers documentation).

Important: If you select a peripheral device attached to one of the two

communication ports (A or B), that port must have been previously

configured to communicate to that specific peripheral device. Refer to

chapter 9 for details on communications setup for ports A and B. Selecting

a program from the control’s memory is the default configuration of the

control. If do not select port A or B, the input device should remain at its

default of control memory and the following procedure should be

unnecessary.

To select the part program input device:

1.

Press the {PRGRAM MANAGE} softkey.

(softkey level 1)

PRGRAM

OFFSET

MACRO

PRGRAM

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

2.

Press the {INPUT DEVICE} softkey.

(softkey level 2)

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

DELETE

VERIFY

PRGRAM

RENAME

INPUT

PRGRAM

PRGRAM

COMENT

PRGRAM

DEVICE

REFORM

CHANGE

MEMORY

DIR

7-5

Chapter 7

Running a Program

3.

Press the softkey corresponding to the location where the part

program is to be read from, {FROM PORT A}, {FROM PORT B}, or

{FROM MEMORY}.

(softkey level 3)

FROM

FROM

FROM

PORT A

PORT B

MEMORY

To activate a part program, it must be selected as described on page 8.3.

7.3

To select a program for automatic execution, follow these steps:

Selecting a Program

Important: Consider the following when selecting a program:

The control cannot select a program for execution if that program file is

still open for editing. See chapter 5 to learn how to exit the edit mode.

Your system installer may have written PAL to allow some other

method of part program selection. Refer to the documentation prepared

by your system installer for additional information.

Before selecting a part program to activate, the input device must have

been previously selected as described on page 7-5. The default

condition selects the part program out of control memory.

If a program was previously activated and not deactivated, the control

cannot select a different part program. If you want a different part

program, you must first deactivate the active program as described on

page 7-8. You can use a different method to select a program; it is

described in chapter 7.

To select a program for automatic execution:

1.

Press the {PRGRAM MANAGE} softkey.

(softkey level 1)

PRGRAM

OFFSET

MACRO

PRGRAM

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

7-6

Chapter 7

Running a Program

This screen appears:

SELECTED PROGRAM:

DIRECTORY

PAGE

1

OF

1

NAME

SIZE

COMMENT

TEST

AE

3.9

O12345

1.3

SUB TEST 1

MAIN

1.3

SHAFT2

1.3

THIS IS A TEST PROGRAM

XXX

1.3

5 FILES

137.8 METERS FREE

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

Important: This screen shows program TEST as active and being edited.

Make sure no part program is currently already active. If a part program

is currently active, the control cannot select a different part program until

the currently active one is deactivated. See page 7-8 to learn how to

deactivate a part program.

If a program is:

This appears to the right

of a program name:

active

A

being edited

E

2.

Key in the name of the part program to activate. If the program is

being selected from control memory, the › or fl cursor keys may be

used to select the program to activate from the directory screen.

If the part program is being selected from a peripheral device

(attached to port A or port B), you must manually key in the part

program name. Make sure the peripheral device is on and ready to

output the part program. You might need to perform a search

operation when selecting a program from a peripheral device to find

the tape location containing the desired part program.

7-7

Chapter 7

Running a Program

3.

Press the {ACTIVE PRGRAM} softkey to activate the selected program.

The control displays the part program name, followed by the first few

blocks of the selected program.

Important: The following softkey level 2 indicates that the control is

using control memory as an input device. If the input device is some

device other than control memory, some of these softkeys are not available.

(softkey level 2)

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

DELETE

VERIFY

PRGRAM

RENAME

INPUT

PRGRAM

PRGRAM

COMENT

PRGRAM

DEVICE

REFORM

CHANGE

MEMORY

DIR

Important: Before you can execute the program, you must place the

control in automatic mode.

7.4

To select a different part program for automatic execution, you must

Deselecting a Part Program

deactivate the part program that is currently active. Follow these steps:

1.

Press the {PRGRAM MANAGE} softkey. The control displays the

program directory screen.

(softkey level 1)

PRGRAM

OFFSET

MACRO

PRGRAM

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

7-8

Chapter 7

Running a Program

2.

Press the {ACTIVE PRGRAM} softkey. The control displays the first

few blocks of the currently active program.

(softkey level 2)

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

DELETE

VERIFY

PRGRAM

RENAME

INPUT

PRGRAM

PRGRAM

COMENT

PRGRAM

DEVICE

REFORM

CHANGE

MEMORY

DIR

3.

If the program selected is not the active program you wanted, press

the {DEC-ACT PRGRAM} softkey. The control deactivates the part

program and return to the directory screen.

(softkey level 3)

DE-ACT

SEARCH

MID ST

T PATH

T PATH

PRGRAM

PRGRAM

GRAPH

DISABL

SEQ

TIME

STOP

PARTS

7.5

Use the Program Search feature to begin program execution from some

Program Search {SEARCH}

block other than the beginning of the program. This feature requires the

operator to establish the necessary G-, M-, S-, F-, and T-words, work

coordinate offsets, etc. that should be active for that block’s execution.

The control can start a program at a chosen block and establishing any

previous G-, M-, S-, F-, and T-words, work coordinate offsets, etc. that

were established in previous blocks using the search with memory feature.

For details, see page 7-12.

The program search feature is not effective for subprograms and

paramacros; only blocks that are in the main program can be searched.

7-9

Chapter 7

Running a Program

To perform a program search operation:

1.

Press the {PRGRAM MANAGE} softkey. The program to search must

have been previously selected for automatic execution as described in

page 7-6.

(softkey level 1)

PRGRAM

OFFSET

MACRO

PRGRAM

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

2.

Press the {ACTIVE PRGRAM} softkey.

(softkey level 2)

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

DELETE

VERIFY

PRGRAM

RENAME

INPUT

PRGRAM

PRGRAM

COMENT

PRGRAM

DEVICE

REFORM

CHANGE

MEMORY

DIR

3.

Press the {SEARCH} softkey.

(softkey level 3)

DE-ACT

SEARCH

MID ST

T PATH

T PATH

PRGRAM

PRGRAM

GRAPH

DISABL

SEQ

TIME

STOP

PARTS

7-10

Chapter 7

Running a Program

4.

Choose from the 6 search options:

If you are searching for:

Press this softkey:

a sequence number

{N SEARCH}

an O-word

{O SEARCH}

the end of each block

{EOB SEARCH}

the program one line at a time

{SLEW}

a specific character string

{STRING SEARCH}

the beginning of your next program

{NEXT PRGRAM} This

softkey is available only if your

input device has been configured

as a tape reader. See chapter 9

on input device selection.

5.

When you use the SLEW or the EOB search options:

If you want to:

Press this softkey:

move to the next or previous blocks in the

{FORWRD} or

program

{REVRSE}

return to the top of the program (the

{TOP OF PRGRAM}

beginning of the first block

exit, when the desired block is found

{EXIT}

Important: When performing an EOB search, the search is executed from

the beginning of the part program, NOT from the point of display.

When you use the N search, O search, or STRING search features,

first key in the desired N number, O number, or character string you

want to search for. After it has been keyed in:

If you want to:

Press this softkey:

start the search

[TRANSMIT]

search for the entered value in the forward or

{FORWRD} or {REVRSE}

reverse direction

return to the top of the program (the

{TOP OF PRGRAM}

beginning of the first block)

exit when the desired block is found.

{EXIT}

If no number is keyed in for an N or O search, the control simply

searches for the next N- or O-word in the program.

7-11

Chapter 7

Running a Program

When you press the {NEXT PRGRAM} softkey, the control first

searches for a valid program end code. See setting communications,

chapter 9. After it finds the program end code, it advances to the

program start code of the next program. If the current program is the

last program on the tape, the message “SERIAL

COMMUNICATION ERROR #5” appears on the screen indicating a

time-out error.

Important: If performing a STRING search, program execution begins at

the beginning of the block that contains the desired character string. This

is not necessarily the location of the string in the program block.

CAUTION: It may be necessary to position the cutting tool at a

location that allows this block to execute without damaging the

workpiece or cutting tool. This can be done through a manual

operation or through MDI.

7.6

Use the Mid-Start Program feature to begin program execution from some

block other than the first block of the program. This feature will scan the

Search With Recall

program as it searches and from within the search area:

{MID

ST

PRGRAM}

send to PAL the last programmed modal G--codes from each modal

group.

send to PAL the last programmed modal M--codes from each modal

group and set its associated PAL strobe (nonmodal codes including

user--defined M--codes are not sent to PAL).

send to PAL the last programmed T code and set its associated PAL

strobe

send to PAL the last programmed auxiliary function code (B--word) and

set its associated PAL strobe

send to PAL the last programmed spindle commanded speed and set its

associated PAL strobe

resolve paramacro equations and assign paramacro variable values (note

on dual process systems shared paramacro variables can be different

than expected depending on the state of the part program in the other

process, also equations that use PAL paramacro variables may also

evaluate differently since no paramacro interaction with PAL occurs

during a search operation).

establishes any work coordinate system, including all offsets and

rotations to the work coordinate system.

7-12

Chapter 7

Running a Program

To perform a program search with recall, follow these steps:

1.

Press the {PRGRAM MANAGE} softkey.

(softkey level 1)

PRGRAM

OFFSET

MACRO

QUICK

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

2.

Press the {ACTIVE PRGRAM} softkey.

(softkey level 2)

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

VERFY

PRGRAM

DELETE

RENAME

INPUT

PRGRAM

COMENT

PRGRAM

PRGRAM

DEVICE

REFORM

MEMORY

Make sure that the program to search is the currently active program.

If it is not, select it for automatic execution as discussed in section

7.3.

3.

Press the {MID ST PRGRAM} softkey.

(softkey level 3)

DE-ACT

SEARCH

MID ST

T PATH

SEQ

PRGRAM

PRGRAM

GRAPH

STOP

TIME

PARTS

4.

To search for a sequence number press the {SEQ # SEARCH} softkey.

To search for a character string press the {STRING SEARCH} softkey.

(softkey level 4)

SEQ #

STRING

SEARCH

SEARCH

7-14

Chapter 7

Running a Program

5.

Key in the desired character string or sequence number to search for

and press the [TRANSMIT] key. The control locates an @ symbol to

the left of the block immediately before the block that automatic

execution begins from.

If this is not the block to begin execution from press either the:

{CONT} softkey to continue to search for the entered character string

or sequence number.

{TOP OF PRGRAM} to return to the first block in the program.

{QUIT} softkey to end either the sequence number search or the

character string search operations.

(softkey level 5)

CONT

TOP OF

QUIT

EXIT

PRGRAM

CAUTION: When you exit a mid-program start (search with

memory), M- and S-codes are sent to PAL. If, during normal

execution, that program activated a spindle, mid-program start

may also start it. To prevent this, your system installer can use

the $BLKSTAT flag , which indicates the control is in

mid-program start.

6.

Press the {EXIT} or the {EXIT & MOVE} softkey once the program is

at the desired location.

{EXIT} - Use this softkey if the tool is at the exact location for

execution of the searched program block. While the control searches

for your starting block it performs calculations to determine what the

absolute position of the axes should be before your selected block is

executed. If the cutting tool is not at this position when you press the

{EXIT} softkey, the control aborts the mid-start operation. When this

occurs the control displays the message “AXIS POSITION

INCORRECT”.

7-15

Chapter 7

Running a Program

7.7

After a program is written or loaded into the control, it should be

thoroughly tested before a part is mounted and machined. The control

Basic Program Execution

offers 3 distinct testing modes in addition to fully automatic operation.

These modes are briefly described below in the order in which they would

normally be implemented.

QuickCheck‰ (see page 7-18) — This mode is a basic syntax checker

for a part program. It checks that proper format and syntax has been

followed. If QuickCheck has been purchased with the graphic option, it

can be used to determine if the proper paths are being generated (refer to

page 9-18 for QuickCheck Graphics). No actual axis motion is

produced during QuickCheck, however, offsets and coordinate system

shifts are performed.

Axis Inhibit (see page 7-20) ---- The axis inhibit mode allows the

execution of a program to take place without moving a selected axis or

axes. Programmed feedrates are active and the program executes in

approximately the same time as normal program execution. Axis

motion is simulated for any of the non-moving axes by all of the

position displays changing at the programmed feedrate. Graphics are

available on the active program graphics screen.

Dry Run (see page 7-21) ---- Dry run simply replaces all F-word

feedrates in a program with a special feedrate determined by the system

installer in AMP. Graphics are available on the active program graphics

screen.

Part Production/Automatic (see page 7-23) ---- In automatic mode all of

the axes are active and all of the programmed feedrates are in effect.

Graphics are available on the active program graphics screen.

All of these modes of execution begin program execution when you press

the <CYCLE START> button.

When you see this to

The control:

the left of the block:

is executing a part program block.

@

has completed the execution of a block. The @ symbol is

usually only seen in single block mode or in cases where it is

necessary to indicate what block automatic execution begins

after.

You can interrupt Axis Inhibit, Dry Run, and Automatic operation by using

any of the operations listed below. Execution can be resumed at the

interrupted location by pressing the <CYCLE START> button.

7-17

Chapter 7

Running a Program

(1) Pressing <CYCLE STOP>

When you press the <CYCLE STOP> button, motion of the cutting tool

decelerates and stops, and the control stops automatic operation. If you

press the <CYCLE STOP> button during a dwell, the dwell is interrupted and

any remaining time/revolutions for the dwell are stored for later execution.

(2) Execution of an M00 or M01 in a Part Program

Execution of:

Description:

M00

the control stops automatic operation after it executes the

remaining commands in the M00 block.

M01

if the OPTIONAL STOP condition is set to ON, the control stops

automatic operation after it executes the remaining commands in

the M01 block. If the OPTIONAL STOP condition is set to OFF,

the M01 is ignored and the control continues executing the part

program as normal. The optional stop condition may be turned off

or on using the Front Panel feature, or through a switch installed

by your system installer.

(3) Entering a Sequence Stop Number

To interrupt execution at a specific block in the part program, use the

sequence stop feature described on page 7-2. The control stops automatic

operation after it completes the commands in the designated block.

(4) Feedhold Status

Your system installer may have written PAL to allow the activation of a

feedhold state through the use of a button or switch. When activated the

control decelerates all moving axes to a feedrate of zero until the feedhold

state is deactivated. For details on using feedhold, refer to documentation

provided by your system installer.

7.7.1

QuickCheck is a basic syntax checker for a part program. It checks that

proper format and syntax have been followed during programming. No

QuickCheck

actual axis motion is produced in QuickCheck mode. The QuickCheck

feature is also available with an optional graphics feature.

If you use the graphics feature, refer to chapter 8 for QuickCheck with

graphics. If you are using a dual-processing system, refer to page 30-4 for

details about how the systems differ.

To use the QuickCheck feature as described below without graphics, the

graphics option must be disabled as described in chapter 8.

7-18

Chapter 7

Running a Program

To use the QuickCheck feature, follow these steps.

1.

Select a program to check as described on page 7-5 and return to

softkey level 1.

2.

Press the {PRGRAM CHECK} softkey.

(softkey level 1)

PRGRAM

OFFSET

MACRO

PRGRAM

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

3.

Press the {QUICK CHECK} softkey.

(softkey level 2)

SELECT

QUICK

STOP

T PATH

T PATH

PRGRAM

CHECK

CHECK

GRAPH

DISABL

When you press the {QUICK CHECK} softkey, the next softkey level

lets you select graphics.

4.

Press the {SYNTAX ONLY} softkey.

(softkey level 3)

GRAPH

SYNTAX

ONLY

When you press the {SYNTAX ONLY} softkey, it appears in reverse

video.

5.

Press the <CYCLE START> button.

When you press the <CYCLE START> button, the program blocks are

executed.

If a program block contains an error, the program check stops and the

control displays the message “ERROR FOUND.”

To continue checking the remaining program blocks, press the

<CYCLE START> button again. If no more errors are found, the control

displays the message “COMPLETED WITH ERROR (S)” and the part

program is automatically deactivated to allow editing.

If the control finds no errors during QuickCheck the program screen

displays the message “COMPLETED WITH NO ERRORS”. The control

then automatically resets the program to the first block.

7-19

Chapter 7

Running a Program

To disable QuickCheck with or without graphics, press the {STOP CHECK}

softkey.

CAUTION: Note that when a program is run during quick

check mode, the control performs all coordinate system offset

operations. This means that changes to the coordinate systems

or coordinate offset tables are made (G10 blocks, changes to

G92 and G52 offsets, and changes to the active work coordinate

systems G54-G59.9). All of these changes are discarded at any

termination of QuickCheck. The pre-QuickCheck values are

restored when the {STOP CHECK} softkey is pressed. Note that

program changes to the active offset or tool offset tables are

not made in QuickCheck mode.

7.7.2

When you activate AXIS INHIBIT, the control can execute a part program

Axis Inhibit Mode

without moving specified axes. The control simulates axis motion by

updating the axis location and feedrate displays, using the commanded

feedrates, acceleration, and deceleration. If graphics are being used the

tool paths of any inhibited axis are still drawn on the graphics screen.

The program is executed in approximately the same amount of time as it

would be in automatic mode, even though some or all axes may not move.

You can use the axis inhibit feature in conjunction with Dry Run.

WARNING: When testing a program using Axis Inhibit the

control still recognizes and executes M-, B-, S-, and T-codes.

To ignore M-, B-, S-, and T-codes, execute Axis inhibit in

conjunction with miscellaneous function lock. See page 7-2.

You can activate AXIS INHIBIT to inhibit motion of any or all of the axes

depending on the configuration determined by your system installer. This

includes jogging moves. When axis motion has been inhibited for a single

axis, the remaining axes still execute normally and the axis location display

is updated as if axis motion were occurring on all axes.

WARNING: Axes not selected for axis inhibit move as they

would if the program were executed in automatic mode.

7-20

Chapter 7

Running a Program

You can activate the Axis Inhibit feature using a switch installed by your

system installer (see documentation provided by the system installer) or by

using the {FRONT PANEL} softkey (see page 2-13). The control must be in

cycle stop or E-Stop to activate or deactivate the Axis Inhibit feature. Any

attempt to activate or deactivate the feature during program execution or

when in cycle suspend or feedhold states is ignored. Attempts to activate

the Axis Inhibit feature during jogging are also ignored.

Press <CYCLE START> to program execution with the Axis Inhibit feature.

Make sure you select a program for execution. See page 7-6.

You can stop program execution with Axis Inhibit at any time by using any

of the methods described for normal program execution or by pressing the

<EMERGENCY STOP> button.

WARNING: Axes not selected for axis inhibit move as they

would if the program were executed in automatic mode.

The spindle motion may also be inhibited by using a switch installed by

your system installer. See the documentation provided by your system

installer. The spindle cannot use the {FRONT PANEL} softkey to activate

the Axis Inhibit feature.

7.7.3

The Dry Run function permits the checking of a part program to make

sure that machine motions are correct. It is intended to be executed

Dry Run Mode

without the material or part mounted. The dry run function replaces all

programmed feedrates with the maximum cutting feedrate. Jogging moves

and moves that are programmed using rapid traverse (G00) are not affected

by dry run.

The Axis Inhibit feature can be used in conjunction with Dry Run if

desired.

If you use the external decel feature simultaneously with the Dry Run

feature, the feedrates that are assigned to External decel feature are used

and the Dry run request is ignored.

7-21

Chapter 7

Running a Program

You can use the <FEEDRATE OVERRIDE> to modify the cutting feedrate.

Your system installer determines in AMP if rapid feedrates are overrides

by the <RAPID FEEDRATE OVERRIDE> switch/button or the <FEEDRATE

OVERRIDE> switch during Dry Run.

CAUTION: When testing a program using Dry Run, the

control still recognizes and executes M-, B-, S-, and T-codes.

To ignore M-, B-, S-, and T-codes, execute Dry Run in

conjunction with miscellaneous function lock. See section

8.1.2.

WARNING: Your system installer can write PAL to allow the

operator to select DRY RUN at any time. This means that

during normal automatic operation, the operator can select

maximum cutting feedrate and replace all feedrates

programmed with an F-word with the AMP assigned DRY RUN

feedrate. This can result in damage to the machine, part, or

injury to the operator.

Figure 7.2

Dry Run

CUTTING

TOOL

CHUCK

WORKPIECE

7-22

Chapter 7

Running a Program

The Dry Run feature can be activated using a switch installed by your

system installer (see documentation provided by your system installer) or

by using the {FRONT PANEL} softkey (see page 2-13).

7.7.4

Automatic mode is the normal operating mode of the control. A program

Part Production/Automatic

that is run in the automatic mode is executed with all of the axes active and

all of the programmed feedrates active. Graphics is also available as

Mode

described in chapter 8.

To select the automatic mode, place the <MODE SELECT> switch/button (on

the MTB panel) in the AUTO position. If not equipped with a mode select

switch, use the {FRONT PANEL} softkey.

Automatic mode is the default mode whenever AUTO appears on the Main

Menu screen, and it is always active unless one of the program checking

modes has been selected.

Figure 7.3

Main Menu Screen in AUTO Mode

E-STOP

PROGRAM[ MM

]

F

.000 MMPM

Z

00000.000

S 0

R X

00000.000

T 1

C

359.99

MEMORY 30000 AUTO STOP

N 99999

(First 4 blocks,

of executing program shown here)

(PAL messages)

PRGRAM

OFFSET

MACRO

PRGRAM

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

In automatic mode, the control manages machine operations according to

the commands in a part program.

7-23

Chapter 7

Running a Program

Command:

Process:

CYCLE START

begins part program execution

CYCLE STOP

stops part program execution

WARNING: Always test a program prior to automatic

operation. Always verify that the workspace is clear and all

safety features are intact before pressing <CYCLE START>.

Figure 7.4

Automatic Mode

0

12345

S_____ M _____

G92 X ____ Z ____

D _________

G00_________

G01 F_______

CUTTING TOOL

CYCLE

START

WORK PIECE

Execution of a part program continues until the control encounters an M02

or M30. If the control does not encounter an M02 or M30 at the end of a

program, the error message “MISSING M02/M30” appears.

You can stop execution at any time by using any of the methods described

on page 7-6 or by pressing the <EMERGENCY STOP> button.

7-24

Chapter 7

Running a Program

CAUTION: When a program recover is performed the control

automatically returns the program to the beginning of the block

that was originally interrupted. The beginning of the block is

probably not the point that axis motion was interrupted. For

absolute linear moves this causes no problem if the tool is still

somewhere along the path of the block that program execution

was interrupted while cutting. In incremental or circular mode

however, if the cutting tool is still located at the point that

program execution was interrupted a restart may damage the

part. If a program recover operation is performed in

incremental mode it is important that the cutting tool be at the

location that the interrupted program block began, not the

location that the program was interrupted at.

This feature may be used to search into any subprogram or paramacro that

may be contained in the main program also.

WARNING: It is the responsibility of the system installers PAL

application to make sure proper activation of all necessary

machine functions has occurred before allowing a interrupted

program to continue. You should verify that all machine

functions are in the correct state before pressing

<CYCLE START>.

Important: The interrupted program recover feature will not:

send PAL nonmodal M--codes including user--defined groups 0 -- 3,

group 4, group 5, and group 6 M--codes.

on dual process systems, halt execution for synchronization codes.

read from or write paramacro variables to PAL

on dual process systems, shared paramacro variables between processes

may not be evaluated as desired depending on the status of the other

process.

send to PAL gear change requests based on spindle speed

7-26

Chapter 7

Running a Program

To perform a program restore operation after automatic program execution

has been interrupted follow these steps:

1.

Press the {PRGRAM MANAGE} softkey.

(softkey level 1)

PRGRAM

OFFSET

MACRO

QUICK

SYSTEM

MANAGE

PARAM

CHECK

SUPORT

FRONT

ERROR

PASS-

SWITCH

PANEL

MESAGE

WORD

LANG

Important: DO NOT SELECT A PROGRAM AS AN ACTIVE

PROGRAM. Do not disable the currently active program (if any). If a

program is reselected as active or disabled by the operator the program

restore feature is canceled.

2.

Press the {RESTRT PRGRAM} softkey. The control automatically

re-selects the interrupted program if it was disabled by the control

when power was lost.

(softkey level 2)

ACTIVE

EDIT

RESTRT

DISPLY

COPY

PRGRAM

PRGRAM

PRGRAM

PRGRAM

PRGRAM

VERFY

PRGRAM

DELETE

RENAME

INPUT

PRGRAM

COMENT

PRGRAM

PRGRAM

DEVICE

REFORM

MEMORY

3.

To automatically search for the block in the current program that was

interrupted press the {EXEC} softkey.

The control will locate an @ symbol to the left of the block

immediately before the block that automatic execution was

interrupted at.

If this is not the block to begin execution from, press the {QUIT}

softkey. The program restore feature will be aborted.

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Chapter 7

Running a Program

CAUTION: When you exit a program restart operation (search

with memory), M- and S-codes are sent to PAL. If, during

normal execution, that program activated a spindle,

mid-program start may also start it.

4.

Press the {EXIT} softkey if the block selected is the block to begin

program execution from. If it not the desired block, it will be

necessary to disable the program or perform a search with memory

operation to locate the desired block manually.

(softkey level 3)

EXEC

QUIT

EXIT

When the {CYCLE START} button is pressed the control resumes program

execution from the block selected with the program re-start feature.

7.9

Use the jog retract feature to allow for inspection or change of the cutting

tool during automatic program execution. It allows the cutting tool to be

Jog Retract

jogged from the workpiece in multiple steps, and then returned to the

workpiece automatically by having the control retrace the jogging steps

that were used.

The control remembers up to 15 jog retract moves. The actual number of

moves retained can vary from 0 to 15 as determined by an AMP parameter

set by your system installer. The control returns the tool along the jog

retract path at a feedrate specified in AMP.

Important: If the same axis is used in succession during a jog retract

operation, the control assumes that only one jog retract move has been

executed on that axis.

Only simple single axes jog moves can be performed during the jog retract

function. You cannot perform multiple axis jogs, arbitrary angle jogs and

jogging offset.

Tool offsets can be changed at any time during jog retract. See page

NO TAG. The control does not make these offsets active until the

execution of the first block after the tool has been returned from jog

retract.

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Chapter 7

Running a Program

Figure 7.5

Jog Retract Operation

Jog retract exit moves

Jog retract return moves

In Figure 7.5 the control only recognized 6 jog moves upon returning

instead of the actual 11 moves that were made to retract the tool. This is

because the jog retract feature records consecutive jog moves on the same

axis as one move.

CAUTION: If the number of jog retract moves performed

exceeds the maximum allowed number set in AMP, the control

moves the cutting tool directly from the final point of jog retract

to the last remembered jog retract point along a straight line

when <CYCLE START> is pressed. Then the tool is returned in

the normal jog retract fashion.

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Chapter 7

Running a Program

Figure 7.6

Jog Retract Moves that Exceed the Maximum Allowed in AMP

Return path

4

3

2

7

5

1

6

Figure 7.6 emphasizes the possible problems that can result from

exceeding the maximum allowed jog retract moves. In this example, the

number of allowed moves set in AMP is four.

When you press the cycle start button at the end of the 7th jog move, the

control ignores moves 5, 6, and 7 and takes the shortest path to the

endpoint of exit move 4. This is because the maximum number of jog

retract moves set in AMP has been exceeded. After reaching the endpoint

of move 4, the control continues the jog retract return operation as normal.

If the jogging moves of 5, 6, and 7 were intended to avoid a protrusion

during the jog retract, a collision could result when returning the tool.

7.10

The block retrace function allows the operator to retrace the motion created

Block Retrace

by up to 15 consecutive part program blocks. The actual number of retrace

blocks allowed is set by your system installer in AMP, and can vary from 1

to 15.

Important: For maximum control efficiency when executing programs,

we recommend that the maximum number of allowable block retraces is

set as small as possible for the current machine application. This is

because the number of allowable Block Retraces directly affects the

controls block look ahead operation.

This function can only be enabled when the control is in cycle stop or

cycle suspend state, and it is ignored if the control has already executed an

M02 or M30 end of program.

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Chapter 7

Running a Program

The block retrace function is unable to retrace any of these blocks and an

attempt to do so results in an error message:

Threading

Tapping

Boring

Inch/Metric changes (unit conversion)

A block that commands a tool change operation

A block that commands a change in the coordinate system

Any block that is followed by a Manual Jog Move except a Jog Retract

The number of blocks retraced is already equal to the maximum number

of retraceable blocks as determined in AMP

Certain Paramacro Parameter Assignments

Interrupt Macros

Any multiprogramming synchronization block (M100 -- M199)

CAUTION: If the block retrace function is deactivated during

its execution (performing a control reset, E-Stop, etc.),

attempting to return the tool by pressing cycle start can cause an

undesired return path. The tool returns to the start point of

block retrace along a linear path. This is most likely not the

retracted path. To avoid possible part or tool damage, we

recommend that the cutting tool be jogged to the point from

which block retrace was started prior to pressing cycle start.

Figure 7.7

Pressing Cycle Start When Retract Path is Lost

Block retrace

aborted here

Normal block retrace path

Start point

of block

Return path taken when

retrace

cycle start is pressed after

block retrace is aborted

END OF CHAPTER

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