[Symeon]

Hello guys i hope everyone is ok. I have an old Denford CNC milling with Fanuc 0M-B controller. I was facing some alarms and "chat gpt" suggested me to press "RESET" and "DELETE" buttons at the same time while the machine was opening. Unfortunately "chat gpt" didn't mention that with th?? step all the parameter memory will be lost.

After that the machine show the following alarms:

417 SERVO ALARM : X AXIS DGTL PARAM
427 SERVO ALARM : Y AXIS DGTL PARAM
437 SERVO ALARM : Z AXIS DGTL PARAM

After some research i managed to found the manual for inputting the parameters. I also found a txt file with some parameters.

I did the steps that the manual said. For example:
1) Enter some parameters by hand (900...919 parameters, 38 parameter)
2)Then i was able to input the following parameters from the pc with the txt file.

After that procedure the machine was coming back to life. I could again go through the menus and i could send/receive files from the pc.

But the alarms continue to show up and the axis are not working.

100 P/S ALARM
417 SERVO ALARM : X AXIS DGTL PARAM
427 SERVO ALARM : Y AXIS DGTL PARAM
437 SERVO ALARM : Z AXIS DGTL PARAM

What i should do now?
The parameters that i inserted are not complete?
Do i have to input more parameters?
If someone has all the parameters (diagnostic, NC, axis, Spindle) it could be nice to send them please.
I will upload my parameters if someone could tell if they are complete.

[zavateandu]

Digital paramaters for the axis means that the parameters for X Y Z axis are not corect or not complete
Check again the paramaters from 8100 8200 8300

[Reaying2]

You’re dealing with a fairly common issue after an unintended *RESET + DELETEoperation on a Fanuc 0M-B controller — this key combination clears all RAM-based parameters, including servo, spindle, diagnostic, and PMC data.

Here’s how you can approach this problem now:


What the Current Alarms Mean

1. 417 / 427 / 437 - SERVO ALARM : \[X/Y/Z] AXIS DGTL PARAM

These alarms indicate invalid or missing servo parameters for each respective axis.
Commonly due to missing or incorrect servo tuning parameters (like 2000–2999 range).

2. 100 P/S ALARM

This is a parameter setting alarm, meaning the system can't function due to missing or invalid settings in critical parameters.



What You’ve Done Right So Far

You inputted some 900–919 parameters manually (these are often comms or boot-related).
You then uploaded a parameter `.txt` file via DNC/PC software.
You regained access to menus and file transfer — indicating partial recovery.


Likely Cause: Incomplete Parameter Set

Yes — it sounds very likely your parameter set is incomplete, especially:

Servo parameters (usually around 2000–2999)
Spindle parameters (usually around 6000+)
Axis tuning (1815, 1816...)
Diagnostic parameters (typically 300–399 and others)
Option parameters (like 0000–0127)
PMC parameters (ladder logic or internal machine functions)


What You Should Do Now

1. Confirm All Parameters Are Loaded

Go to the parameter edit mode (often via setting `MDI` > `PARAM` > `WRITE ENABLE = 1`)
Review key parameter ranges:

`0000–0127` – basic options
`01815, 01816, 01818, 01820...` – axis config
`02000–02999` – servo tuning
`06000+` – spindle config
`09000+` – user macros or soft PLC
Compare to a known full parameter backup (e.g., from Denford or other user)

2. Post/Upload Your Parameter File

If you can upload your `.txt` parameter file, I can review it and help you spot missing blocks.


3. Check for Custom PMC Parameters

Some Denford CNCs have ladder logic or PMC variables that control safety, hydraulics, etc. These may need reloading via a separate file. Without this, axis enable signals might be missing.



The issue is almost certainly due to incomplete parameter loading.
Focus on checking and completing servo, spindle, and diagnostic parameters.
Upload your parameter file here — I can compare and suggest what's missing.
If possible, locate a full backup from another identical machine.

[Symeon]

Thank you my friend. It starts to make sense now. I will try it again next week that i will visit again the place were the machine is. Thank you for your time, I will inform you if something happens. Have a nice day !

[Symeon]

Thank you for your time, i will check it next week. Have a nice day my friend!

[Symeon]

Here is also the parameter file that i have.

[zavateandu]

You’re dealing with a fairly common issue after an unintended *RESET + DELETEoperation on a Fanuc 0M-B controller — this key combination clears all RAM-based parameters, including servo, spindle, diagnostic, and PMC data.

Here’s how you can approach this problem now:


What the Current Alarms Mean

1. 417 / 427 / 437 - SERVO ALARM : \[X/Y/Z] AXIS DGTL PARAM

These alarms indicate invalid or missing servo parameters for each respective axis.
Commonly due to missing or incorrect servo tuning parameters (like 2000–2999 range).

2. 100 P/S ALARM

This is a parameter setting alarm, meaning the system can't function due to missing or invalid settings in critical parameters.



What You’ve Done Right So Far

You inputted some 900–919 parameters manually (these are often comms or boot-related).
You then uploaded a parameter `.txt` file via DNC/PC software.
You regained access to menus and file transfer — indicating partial recovery.


Likely Cause: Incomplete Parameter Set

Yes — it sounds very likely your parameter set is incomplete, especially:

Servo parameters (usually around 2000–2999)
Spindle parameters (usually around 6000+)
Axis tuning (1815, 1816...)
Diagnostic parameters (typically 300–399 and others)
Option parameters (like 0000–0127)
PMC parameters (ladder logic or internal machine functions)


What You Should Do Now

1. Confirm All Parameters Are Loaded

Go to the parameter edit mode (often via setting `MDI` > `PARAM` > `WRITE ENABLE = 1`)
Review key parameter ranges:

`0000–0127` – basic options
`01815, 01816, 01818, 01820...` – axis config
`02000–02999` – servo tuning
`06000+` – spindle config
`09000+` – user macros or soft PLC
Compare to a known full parameter backup (e.g., from Denford or other user)

2. Post/Upload Your Parameter File

If you can upload your `.txt` parameter file, I can review it and help you spot missing blocks.


3. Check for Custom PMC Parameters

Some Denford CNCs have ladder logic or PMC variables that control safety, hydraulics, etc. These may need reloading via a separate file. Without this, axis enable signals might be missing.



The issue is almost certainly due to incomplete parameter loading.
Focus on checking and completing servo, spindle, and diagnostic parameters.
Upload your parameter file here — I can compare and suggest what's missing.
If possible, locate a full backup from another identical machine.

Does people are reading these days what people with problems rae writing??
i mean he write very clear that is about FANUC 0M and you put a lot of stuff that is not for FANUC 0M
Really?
are you even reading ??
OMG
please read what is about before post stuff that not helping but making more dificult for the guy or go in vacation and let us handle this

[zavateandu]

Here is also the parameter file that i have.

do you have also the diagnose file to load?

[zavateandu]

Hello guys i hope everyone is ok. I have an old Denford CNC milling with Fanuc 0M-B controller. I was facing some alarms and "chat gpt" suggested me to press "RESET" and "DELETE" buttons at the same time while the machine was opening. Unfortunately "chat gpt" didn't mention that with th?? step all the parameter memory will be lost.

After that the machine show the following alarms:

417 SERVO ALARM : X AXIS DGTL PARAM
427 SERVO ALARM : Y AXIS DGTL PARAM
437 SERVO ALARM : Z AXIS DGTL PARAM

After some research i managed to found the manual for inputting the parameters. I also found a txt file with some parameters.

I did the steps that the manual said. For example:
1) Enter some parameters by hand (900...919 parameters, 38 parameter)
2)Then i was able to input the following parameters from the pc with the txt file.

After that procedure the machine was coming back to life. I could again go through the menus and i could send/receive files from the pc.

But the alarms continue to show up and the axis are not working.

100 P/S ALARM
417 SERVO ALARM : X AXIS DGTL PARAM
427 SERVO ALARM : Y AXIS DGTL PARAM
437 SERVO ALARM : Z AXIS DGTL PARAM

What i should do now?
The parameters that i inserted are not complete?
Do i have to input more parameters?
If someone has all the parameters (diagnostic, NC, axis, Spindle) it could be nice to send them please.
I will upload my parameters if someone could tell if they are complete.

------I was facing some alarms and "chat gpt" suggested me to press "RESET" and "DELETE" buttons at the same time while the machine was opening.------
that is why the chat gbt will be the new STRANET from the Terminator movie that will make the nuclear war
i tell every person to stop using that nonsense chat gbt and look for normal answers but this generation will doom the planet in one day

[Symeon]

No men, unfortunately i don't have the diagnose file. Do you have any idea where can i find it. Or do you have it?
Thanks for your time my friend, have a good day!

[Symeon]

Exactly, Chat gpt got me in big troubles. I shouldn't have trusted it at the beginning.