Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

This email has been sent from a virus-free computer protected by Avast. www.avast.com

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Virus-free. www.avast.com

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Virus-free. www.avast.com

Hi Tom,

I haven't determined if KFLOP is re-booting, but I will modify the Init file to test. The problem with that is the cabinets have safety lockouts where the customer can't open them without shutting off the power supply first.

Are there things I could try to help prevent re-boots of KFLOP or a Windows disconnect?

Best regards,
David.

 

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

On 9/21/2017 6:27 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Virus-free. www.avast.com

Hi David,

Another approach would be to connect in with KMotion.exe and upload an axis channel configuration to see if it is your configuration or the default after re-boot.  That would require re-establishing communication without cycling power on KFLOP.  Is KFLOP USB Powered or externally powered?  Isolated power?

If you aren't able to perform tests to narrow down the source of the problem then all you can do is general things such as check supplies, wiring, shielding, grounding, isolation, etc...  You might check the USB cable.  Check the shield resistance from shell to shell.  It should be less than 1 ohm.  Does it have a ferrite ring?  Does it pass through any panels that inadvertently connect the shield to any GND (earth?). 

Regards
TK

 

Hi Tom,

I haven't determined if KFLOP is re-booting, but I will modify the Init file to test. The problem with that is the cabinets have safety lockouts where the customer can't open them without shutting off the power supply first.

Are there things I could try to help prevent re-boots of KFLOP or a Windows disconnect?

Best regards,
David.

On 9/21/2017 1:00 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

On 9/21/2017 6:27 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Virus-free. www.avast.com

Hi Tom,

Thanks for that information. The configuration check is certainly doable.

The KFLOP/SnapAmp has it's own isolated power. The USB cables have ferrite rings and pass through clearance holes in the cabinets so as to not connect shielding. I will check the cables for shield resistance. One customer has suggested the USB ports on computers often fail over time, but changing ports didn't seem to have any effect.

I will do some more investigation.

Thanks again,
David.

 

Hi David,

Another approach would be to connect in with KMotion.exe and upload an axis channel configuration to see if it is your configuration or the default after re-boot.  That would require re-establishing communication without cycling power on KFLOP.  Is KFLOP USB Powered or externally powered?  Isolated power?

If you aren't able to perform tests to narrow down the source of the problem then all you can do is general things such as check supplies, wiring, shielding, grounding, isolation, etc...  You might check the USB cable.  Check the shield resistance from shell to shell.  It should be less than 1 ohm.  Does it have a ferrite ring?  Does it pass through any panels that inadvertently connect the shield to any GND (earth?). 

Regards
TK

On 9/21/2017 10:14 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I haven't determined if KFLOP is re-booting, but I will modify the Init file to test. The problem with that is the cabinets have safety lockouts where the customer can't open them without shutting off the power supply first.

Are there things I could try to help prevent re-boots of KFLOP or a Windows disconnect?

Best regards,
David.

On 9/21/2017 1:00 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

On 9/21/2017 6:27 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

Virus-free. www.avast.com

Hi Russ,

Thanks for that suggestion. I will certainly give it a try to see how it goes and let you know.

Best regards,
David.

 

David,

I too had many disconnection issues and used a Ferrite core on the cables which did help but not completely eliminate my issues.  I purchased a USB isolator for the USB port on the PC, just a little $25 unit from ebay and all the disconnects stopped.  Give it a try it might just fix all your issues as well.

 

Russ

 

 

From: DynoMotion@yahoogroups.com [mailto:DynoMotion@yahoogroups.com]
Sent: Thursday, September 21, 2017 1:41 PM
To: DynoMotion@yahoogroups.com
Subject: Re: [DynoMotion] KMotion DLL Disconnecting

 

 

Hi Tom,

Thanks for that information. The configuration check is certainly doable.

The KFLOP/SnapAmp has it's own isolated power. The USB cables have ferrite rings and pass through clearance holes in the cabinets so as to not connect shielding. I will check the cables for shield resistance. One customer has suggested the USB ports on computers often fail over time, but changing ports didn't seem to have any effect.

I will do some more investigation.

Thanks again,
David.

On 9/21/2017 1:28 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

Another approach would be to connect in with KMotion.exe and upload an axis channel configuration to see if it is your configuration or the default after re-boot.  That would require re-establishing communication without cycling power on KFLOP.  Is KFLOP USB Powered or externally powered?  Isolated power?

If you aren't able to perform tests to narrow down the source of the problem then all you can do is general things such as check supplies, wiring, shielding, grounding, isolation, etc...  You might check the USB cable.  Check the shield resistance from shell to shell.  It should be less than 1 ohm.  Does it have a ferrite ring?  Does it pass through any panels that inadvertently connect the shield to any GND (earth?). 

Regards
TK

On 9/21/2017 10:14 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I haven't determined if KFLOP is re-booting, but I will modify the Init file to test. The problem with that is the cabinets have safety lockouts where the customer can't open them without shutting off the power supply first.

Are there things I could try to help prevent re-boots of KFLOP or a Windows disconnect?

Best regards,
David.

On 9/21/2017 1:00 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

On 9/21/2017 6:27 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

 

 

 

 

 

Virus-free. www.avast.com

 

 

 

 

Russ,

There seems to be different capabilities of the isolators. Is there certain features I should look for which would be more helpful with the KFLOP communication issue?

Thanks again,
David.

Hi Russ,

Thanks for that suggestion. I will certainly give it a try to see how it goes and let you know.

Best regards,
David.

On 9/22/2017 3:49 PM, 'Russ Larson' rdlarson@... [DynoMotion] wrote:

 

David,

I too had many disconnection issues and used a Ferrite core on the cables which did help but not completely eliminate my issues.  I purchased a USB isolator for the USB port on the PC, just a little $25 unit from ebay and all the disconnects stopped.  Give it a try it might just fix all your issues as well.

 

Russ

 

 

From: DynoMotion@yahoogroups.com [mailto:DynoMotion@yahoogroups.com]
Sent: Thursday, September 21, 2017 1:41 PM
To: DynoMotion@yahoogroups.com
Subject: Re: [DynoMotion] KMotion DLL Disconnecting

 

 

Hi Tom,

Thanks for that information. The configuration check is certainly doable.

The KFLOP/SnapAmp has it's own isolated power. The USB cables have ferrite rings and pass through clearance holes in the cabinets so as to not connect shielding. I will check the cables for shield resistance. One customer has suggested the USB ports on computers often fail over time, but changing ports didn't seem to have any effect.

I will do some more investigation.

Thanks again,
David.

On 9/21/2017 1:28 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

Another approach would be to connect in with KMotion.exe and upload an axis channel configuration to see if it is your configuration or the default after re-boot.  That would require re-establishing communication without cycling power on KFLOP.  Is KFLOP USB Powered or externally powered?  Isolated power?

If you aren't able to perform tests to narrow down the source of the problem then all you can do is general things such as check supplies, wiring, shielding, grounding, isolation, etc...  You might check the USB cable.  Check the shield resistance from shell to shell.  It should be less than 1 ohm.  Does it have a ferrite ring?  Does it pass through any panels that inadvertently connect the shield to any GND (earth?). 

Regards
TK

On 9/21/2017 10:14 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I haven't determined if KFLOP is re-booting, but I will modify the Init file to test. The problem with that is the cabinets have safety lockouts where the customer can't open them without shutting off the power supply first.

Are there things I could try to help prevent re-boots of KFLOP or a Windows disconnect?

Best regards,
David.

On 9/21/2017 1:00 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

On 9/21/2017 6:27 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

 

 

 

 

 

Virus-free. www.avast.com

 

 

 

 

Attachments :

IMG_1787-15038.jpg

Thank you Russ.

I will get a couple on order to check them out.

Best regards,
David.

 

David,

I just picked up one of the self-contained DC-DC version, attached is a photo.  These units basically isolate the power supply in the PC from the power on the KFLOP and CNC system which works wonders.

 

Russ

 

 

From: DynoMotion@yahoogroups.com [mailto:DynoMotion@yahoogroups.com]
Sent: Saturday, September 23, 2017 7:12 AM
To: DynoMotion@yahoogroups.com
Subject: Re: [DynoMotion] KMotion DLL Disconnecting

 

 

Russ,

There seems to be different capabilities of the isolators. Is there certain features I should look for which would be more helpful with the KFLOP communication issue?

Thanks again,
David.

On 9/23/2017 6:47 AM, David Stevenson wrote:

Hi Russ,

Thanks for that suggestion. I will certainly give it a try to see how it goes and let you know.

Best regards,
David.

On 9/22/2017 3:49 PM, 'Russ Larson' rdlarson@... [DynoMotion] wrote:

 

David,

I too had many disconnection issues and used a Ferrite core on the cables which did help but not completely eliminate my issues.  I purchased a USB isolator for the USB port on the PC, just a little $25 unit from ebay and all the disconnects stopped.  Give it a try it might just fix all your issues as well.

 

Russ

 

 

From: DynoMotion@yahoogroups.com [mailto:DynoMotion@yahoogroups.com]
Sent: Thursday, September 21, 2017 1:41 PM
To: DynoMotion@yahoogroups.com
Subject: Re: [DynoMotion] KMotion DLL Disconnecting

 

 

Hi Tom,

Thanks for that information. The configuration check is certainly doable.

The KFLOP/SnapAmp has it's own isolated power. The USB cables have ferrite rings and pass through clearance holes in the cabinets so as to not connect shielding. I will check the cables for shield resistance. One customer has suggested the USB ports on computers often fail over time, but changing ports didn't seem to have any effect.

I will do some more investigation.

Thanks again,
David.

On 9/21/2017 1:28 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

Another approach would be to connect in with KMotion.exe and upload an axis channel configuration to see if it is your configuration or the default after re-boot.  That would require re-establishing communication without cycling power on KFLOP.  Is KFLOP USB Powered or externally powered?  Isolated power?

If you aren't able to perform tests to narrow down the source of the problem then all you can do is general things such as check supplies, wiring, shielding, grounding, isolation, etc...  You might check the USB cable.  Check the shield resistance from shell to shell.  It should be less than 1 ohm.  Does it have a ferrite ring?  Does it pass through any panels that inadvertently connect the shield to any GND (earth?). 

Regards
TK

On 9/21/2017 10:14 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I haven't determined if KFLOP is re-booting, but I will modify the Init file to test. The problem with that is the cabinets have safety lockouts where the customer can't open them without shutting off the power supply first.

Are there things I could try to help prevent re-boots of KFLOP or a Windows disconnect?

Best regards,
David.

On 9/21/2017 1:00 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

No it shouldn't be related to a watchdog timeout.  The USB is disconnecting causing that error.  Its also not likely to be a resource conflict.

Were you able to determine if KFLOP is re-booting or if Windows is disconnecting?  One test is to turn off a KFLOP LED in your Init Program.  That way if the LED comes back on you know KFLOP has somehow re-booted.

Regards
TK

On 9/21/2017 6:27 AM, David Stevenson david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

Still having this kind of issue on a couple of different machines. I suspect the main culprit is likely noise, but may be a power struggle between system resources.

Is this error from a watchdog timer? If it is, can the allowable time be adjusted? I ask because these machines run quite slowly and possibly a small increase in the allowable "no signal" time might reduce the timeout occurrences?

What are you thoughts on this?

Thank you and best regards,
David.

On 2/5/2016 9:07 PM, David Stevenson wrote:

Hi Tom,

I will check those things and try to get answers to your questions. The machine is about 3000 miles from me so it may take some digging.

Thanks for your help,
David.

On 2/5/2016 6:46 PM, Tom Kerekes tk@... [DynoMotion] wrote:

 

Hi David,

That is more likely a noise/supply/grounding issue.  Can you tell if KFLOP is re-booting?  When does it happen?  If you turn off noise sources does the problem go away?

Regards
TK

On 2/5/2016 3:06 PM, david.m.stevenson@... [DynoMotion] wrote:

 

Hi Tom,

I have a machine which is experiencing a problem with the KMotion DLL regularly disconnecting. The screen message is "Read Failed - Auto Disconnect".

The system is a KFlop/SnapAmp combo and I am wondering which things to check. The cable seems to be plugged properly and the Windows OS (ver 7 I think) is not connected to the internet and is set to notify only if updates are available, which it shouldn't know about because it is offline.

Does this normally only happen when the system is busy? There shouldn't be much running in the background on this one.

Thanks for any suggestions on this one,
David.

 

 

 

 

 

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