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FANUC Series 0i-MODEL F Plus. CONNECTION MANUAL (FUNCTION) - page 351

18. DIAGNOSIS FUNCTION

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I/O Link 3 retry abnormality warning signal WIOCH3<F0535.2>

[Classification] Output signal

[Operation] This signal is output when a warning occurs.

[Function] This signal is set to 1 when the retry count per eight hours for I/O Link on the third

channel side is equal to or greater than the setting of parameter No. 11530.
The other usage is the same as in I/O Link 1 retry failure warning signal WIOCH1.

SRAM ECC abnormality warning signal WECCS<F0535.3>

[Classification] Output signal

[Operation] This signal is output when a warning occurs.

[Function] SRAM, which stores parameters, machining programs, offset data, etc., uses ECC (error

correction code) to correct a single bit error. If the SRAM error correction count is equal
to or greater than the setting of parameter No. 11531 (standard setting 0, which means
five retries per eight hours), this signal is set to 1.
Once this signal is set to 1, the value is kept until the CNC power is turned off.

Embedded Ethernet communication abnormality warning signal WETE<F0535.4>

[Classification] Output signal

[Operation] This signal is output when a warning occurs.

[Function] If the total number of various errors detected by the communication hardware of the

embedded Ethernet function is equal to or greater than the setting of parameter No. 11532
(standard setting 0, which means 10 retries per one minute), this signal is set to 1.
Once this signal is set to 1, the value is kept until the CNC power is turned off.

Fast Ethernet communication abnormality warning signal WETF<F0535.5>

[Classification] Output signal

[Operation] This signal is output when a warning occurs.

[Function] If the total number of various errors detected by the communication hardware of the fast

Ethernet function is equal to or greater than the setting of parameter No. 11533 (standard
setting 0, which means 10 retries per one minute), this signal is set to 1.
Once this signal is set to 1, the value is kept until the CNC power is turned off.

FL-net1 communication abnormality warning signal WFLN1<F0535.6>

[Classification] Output signal

[Operation] This signal is output when a warning occurs.

[Function] If the total number of various errors detected by the communication hardware of the

FL-net1 function is equal to or greater than the setting of parameter No. 11534 (standard
setting 0, which means 3 retries per one minute), this signal is set to 1.
Once this signal is set to 1, the value is kept until the CNC power is turned off.

FL-net2 communication abnormality warning signal WFLN2<F0535.7>

[Classification] Output signal

[Operation] This signal is output when a warning occurs.

[Function] If the total number of various errors detected by the communication hardware of the

FL-net2 function is equal to or greater than the setting of parameter No. 11534 (standard
setting 0, which means 3 retries per one minute), this signal is set to 1.
Once this signal is set to 1, the value is kept until the CNC power is turned off.

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18.4

TROUBLE DIAGNOSIS

18.4.1

Outline

Investigating the cause of Servo/Spindle/CNC alarms becomes easier by diagnosis according to the
guidance message of this function.
And when the thermal simulation data or disturbance level of servo axis exceeds the trouble forecast level,
the machine can be safely stopped by detecting the breakdown beforehand by the use of the trouble
forecast signal.
It introduces the example of the method of pursuing the cause of the alarm occurrence that uses the
trouble diagnosis function as follows.

When alarm "SV0410 EXCESS ERROR (STOP)" is occurred.

It explains the procedure of the cause investigation when following alarm "SV0410 EXCESS ERROR
(STOP)" is occurred.

Fig.18.4.1 (a) Alarm message screen (10.4-inch display unit)

The cause of occurrence is pursued by answering the question displayed on the screen according to the
following procedures by soft key [YES] or [NO] though there are some occurrence factors of the alarm
"SV0410 EXCESS ERROR (STOP)".

1

After pushing return soft key [

], press the continuous menu key

until soft key

[GUIDE]/[MONIT]/[W.GRPH] appears.

Press soft key [GUIDE].

Fig.18.4.1 (b) Soft key to select trouble diagnosis guidance screen (10.4-inch display unit)

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Because the following screens are displayed, press soft key [YES].

Fig.18.4.1 (c) Trouble diagnosis guidance screen (10.4-inch display unit)

The following guidances are displayed.

Fig.18.4.1 (d) Trouble diagnosis guidance screen (10.4-inch display unit)

Trouble diagnosis graphic screen is displayed according to the above guidance and the torque command
is confirmed.

Trouble diagnosis graphic screen is displayed according to the following procedures.

1

Press return soft key [

Press soft key [W.GRPH].

Fig.18.4.1 (e) Soft key to select trouble diagnosis graphic screen (10.4-inch display unit)

Press soft key [W.PRM].

Fig.18.4.1 (f) Soft key to select trouble diagnosis parameter screen (10.4-inch display unit)

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A necessary parameter for the graphic display is set as follows.

Fig.18.4.1 (g) Trouble diagnosis parameter screen (10.4-inch display unit)

The displayed axis is selected by inputting the index of an axis to the box next to "AXIS".
The displayed data kind is selected by inputting data kind number to the box next to "DATA KIND".

This time, "1" is set in the index of an axis to confirm the waveform of the torque command of the X1
axis and "6" is set to data kind number.

Trouble diagnosis graphic screen is displayed according to the following procedures.

1

Press return soft key [

Press soft key [G-ADJ.].

Fig.18.4.1 (h) Soft key to select trouble diagnosis graphic screen (10.4-inch display unit)

The graphical chart of the torque command immediately before occurring the alarm as follows is
displayed.
The vertical line shown by the arrow on a right edge is time that the alarm is occurred.

Fig.18.4.1 (i) Trouble diagnosis graphic screen (10.4-inch display unit)

The index of an axis to graphic display

Data of graphic display

Time that alarm is occurred

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Return to trouble diagnosis guidance screen, and press the soft key [NO], because it can be judged that
the torque command doesn't vibrate from this graphical chart.
Trouble diagnosis guidance screen is displayed according to the following procedures.

1.

Press return soft key [

Press soft key [GUIDE].

Fig.18.4.1 (j) Soft key to select trouble diagnosis guidance screen (10.4-inch display unit)

Press soft key [NO] after pressing the soft key [(OPRT)] on the trouble diagnosis guidance screen.

Fig.18.4.1 (k) Trouble diagnosis guidance screen (10.4-inch display unit)

When soft key [NO] is pressed, the following guidances are displayed.

Fig.18.4.1 (l) Trouble diagnosis guidance screen (10.4-inch display unit)

The cause of the alarm is specified like this, and cope according to the content of the guidance.

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18.4.2

Investigation procedure of cause of alarm occurrence

The cause of occurrence can be investigated according to the following procedures when Servo/Spindle
alarms are occurred.

NOTE

Status display of the trouble diagnosis screen should be [SAMPLING] to diagnose
it when the the servo alarm/spindle alarm is occurred.
Change in the state of [SAMPLING] surely referring to "Clear of the preserved
data" in Chapter 18.4.4 when status display is not [SAMPLING].

Investigation procedure (for 8.4/10.4-inch display unit)

Procedure

Press function key

, and the message screen is displayed.

After pushing return soft key [

], press the continuous menu key

until soft key

[GUIDE]/[MONIT]/[W.GRPH] appears.

Press soft key [GUIDE].
The trouble diagnosis guidance screen is displayed.
The guidance to specify the cause of the occurred alarm is displayed on the trouble diagnosis
guidance screen.
The cause of occurrence and the coping method of the alarm are displayed by answering in soft key
[YES]/[NO] referring to servo/spindle monitor information on the trouble diagnosis monitor screen,
the waveform data of the trouble diagnosis graphic screen, and the diagnosis screen, etc.

Investigation procedure (for 15/19-inch display unit)

Procedure

Press function key

, and the message screen is displayed.

Press the vertical soft key [NEXT PAGE] until vertical soft key [GUIDE]/[MONIT]/[W.GRPH]
appears.

Press the vertical soft key [GUIDE].
The trouble diagnosis guidance screen is displayed.
The guidance to specify the cause of the occurred alarm is displayed on the trouble diagnosis
guidance screen.
The cause of occurrence and the coping method of the alarm are displayed by answering in
horizontal soft key [YES]/[NO] referring to servo/spindle monitor information on the trouble
diagnosis monitor screen, the waveform data of the trouble diagnosis graphic screen, and the
diagnosis screen, etc.

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18.4.3

Trouble diagnosis guidance screen

Outline

The trouble diagnosis guidance screen displays the guidance message to specify the cause of an alarm.
The cause of the alarm can be specified by confirmation/coping according to the guidance, and answering
by soft key [YES]/[NO] in a short time.

Display procedure of trouble diagnosis guidance screen (for 8.4/10.4-inch display
unit)

Procedure

Press function key

Press the continuous menu key

until soft key [GUIDE] appears.

Press soft key [GUIDE]. The trouble diagnosis guidance screen is displayed as follows.

Fig.18.4.3 (a) Trouble diagnosis guidance screen (10.4-inch display unit)

Display procedure of trouble diagnosis guidance screen (for 15/19-inch display unit)

Procedure

Press function key

Press the vertical soft key [NEXT PAGE] until vertical soft key [GUIDE] appears.

Press the vertical soft key [GUIDE]. The trouble diagnosis guidance screen is displayed.

Explanation

- Contents of Display

Trouble Code : "NC"-"Alarm type + alarm number" is displayed as code for identifying alarm.
Contents of Trouble

: Alarm Message.

Probable Cause

: Probable Cause of alarm.

Guidance message

: Question to find the cause or answer to remove trouble is displayed.

Status display

Guidance message

Probable cause

Contents of trouble

Trouble Code

Status display

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[RESUMING] :

When press soft key [RESUME] , the guidance message which was displayed before CNC
power turned off is displayed again. Then [RESUMING] appears.

[SAMPLING] / [LATCHED] :

In CNC, there are two states in the state that the state (sampling state) to sample servo/spindle
data whenever it usually operates and servo/spindle alarm are occurred and the sampling stops
(preserved state). [SAMPLING] or [LATCHED] display show the two states.
The sampling of servo/spindle monitor data is stopped when the servo/spindle alarm is occurred,
and the data when the alarm is occurred is kept in CNC.
It is automatically diagnosed that it switches to the trouble  diagnosis guidance screen in
[LATCHED]  state after the alarm is occurred, and the diagnosis to servo/spindle alarm is
displayed partially in CNC based on servo/spindle data when the alarm is occurred.
There is a possibility that a correct diagnosis cannot be done when the alarm number diagnosed
on the trouble  diagnosis guidance screen and the alarm number when monitor data  was
preserved when the alarm is occurred are different  when the alarm is occurred next if the
sampling is not begun. In this case, the display of [LATCHED] state blinks.
Clear  the  kept  data on the screen of either the trouble  diagnosis guidance screen,  the  trouble
diagnosis monitor screen, or the trouble diagnosis graphic screen to begin the sampling again in
preparation for the alarm occurred next after  status display  changes into [LATCHED]  state
once. after diagnosing the cause of occurrence and the corrective action of the alarm.
When the kept data is cleared, [LATCHED] state changes into [SAMPLING] state, and restarts
the sampling of servo/spindle monitor data.

Operation

Press the soft key [(OPRT)] on the trouble diagnosis guidance screen. (Only for 8.4/10.4-inch display
unit)

- Change of Guidance

Soft key [YES]/[NO] :

Check contents of guidance message, and, answer by pressing soft key [YES] or [NO]. Then the
next guidance message is displayed.
In some cases CNC automatically checks and judges contents of guidance. In this case the next
guidance message is automatically displayed.
Automatic diagnosis is not done in case that CNC power turns off once after servo /spindle monitor
data is kept.

Soft key [BACK] :

Guidance message returns back 1 step.
It is possible to trace back the guidance message when soft key [YES]/[NO] is pressed by mistake.

Soft key [RESUME] :

Guidance message which was displayed before CNC power turned off is displayed again.
The diagnosis can be continued from the guidance displayed again.
However, it is not possible to go back to the step before the point where soft key [BACK] is pressed.
Status display “RESUMING” is displayed during the guidance that starts by pressing soft key
[RESUME].

- Change of alarm

When several alarms occur in same time, pressing page key

can select the guidance

message.

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