Duet connection

Casugo

Hello!

I've encountered an issue while trying to connect to the Duet via Ethernet.

Here's some context: I've been working smoothly for about 2 months with a Duet 3HB6CH V 3.4, and it was connecting perfectly until today :(. After restarting the interface, it failed to reconnect. I accessed YAT and input the M552 command, which displayed the configured IP address and the actual IP address as 0.0.0.0 (fig 1).

Following that, I attempted to change the IP address by using the command M552 S1 P-IPaddress. Surprisingly, it responded with 'ok' but didn't confirm the complete IP address alteration. When I entered M552 again, it showed the configured IP as the one I inputted, but the actual IP remained 0.0.0.0 (fig 1). Consequently, I'm unable to establish a connection.

Do you have any insights into why this might be happening?

Thank you very much, and I hope you have a great rest of your day!

FIG.1

![alt text]( image url)

fcwilt

@Casugo

Have you always used a "hard coded" IP address in your Duet as opposed to using DHCP?

Have you checked that the physical connection is still "live"? Like here the other day when a guest removed the cable from the wall jack for some reason?

Frederick

Casugo

@fcwilt said in Duet connection:

DHCP

Yes , I have always used a IP address and I don't know how to connect using DHCP.

Yes, all the connections, wall, the ethernet all hahah

fcwilt

@Casugo

The problem that can sometimes happen with a fixed IP address assigned to some device, like your Duet, is that the DHCP server (typically in your router) hands out many address and it may, by chance, hand out the fixed address you chose for the Duet to some other device first.

The best approach, assuming the DHCP server supports it, is called a "reservation". Each device on the network has a unique MAC address. A reservation on the DHCP server associates a MAC address with a fixed IP address. So a device that has a reservation on the DHCP server always gets the same address and the DHCP server never gives out that address to some other device.

Highly recommended if you can figure out how to make reservations on your DHCP server.

Frederick

Casugo

@fcwilt said in Duet connection:

Even if I'm not using a wifi board? Im connecting by ethernet and never have this problem before.

Do you have any advice to overcome this issue?

Thank you!!

fcwilt

@Casugo said in Duet connection:

Even if I'm not using a wifi board?

It can happen on any TCP/IP connection regardless of the type of connection.

Im connecting by ethernet and never have this problem before.

That's not unexpected. Normally a DHCP tried it's best to hand out the same IP address if handed out before, to a given device.

Do you have any advice to overcome this issue?

Do you know the range of IP addresses on your network? A common setting for a home network might be 192.168.0.0 to 192.168.0.255 but there are many other possibilities.

Frederick

Casugo

@fcwilt
Okay, no, unfortunately, I do not have the range :S

I tried to change the network but it did not work either. Now I'm afraid to lose all the configuration :S

fcwilt

@Casugo said in Duet connection:

@fcwilt
Okay, no, unfortunately, I do not have the range :S

I tried to change the network but it did not work either. Now I'm afraid to lose all the configuration :S

Well that should not happen. You can always remove the SD card and use an SD-card-to-USB device to copy the contents onto your computer.

You do have a computer that you are using to connect to the Duet?

Frederick

droftarts

@Casugo Send M122 via YAT and post the response. Do you get any lights on the Ethernet port on the Duet, or on your router, to show there is a connection? You should get a green one once the network interface starts up, and M552 responds with 'Ethernet enabled'. If not, check the cable is fully in the Ethernet port, and/or try a different Ethernet cable.

Ian

Casugo

@droftarts

M122
=== Diagnostics ===<LF>RepRapFirmware for Duet 3 MB6HC version 3.3 (2021-06-15 21:45:47) running on Duet 3 MB6HC v1.01 or later (standalone mode)<LF>Board ID: 08DJM-956BA-NA3TN-6JKDD-3SJ6R-KU8UU<LF>Used output buffers: 1 of 40 (1 max)<LF>=== RTOS ===<LF>Static ram: 150904<LF>Dynamic ram: 90544 of which 256 recycled<LF>Never used RAM 109632, free system stack 192 words<LF>Tasks: NETWORK(ready,30.1%,548) ETHERNET(notifyWait,0.0%,212) HEAT(delaying,0.0%,417) Move(notifyWait,0.0%,352) CanReceiv(notifyWait,0.0%,944) CanSender(notifyWait,0.0%,374) CanClock(delaying,0.0%,343) TMC(notifyWait,0.0%,105) MAIN(running,69.8%,1272) IDLE(ready,0.1%,29), total 100.0%<LF>Owned mutexes: USB(MAIN)<LF>=== Platform ===<LF>Last reset 00:01:29 ago, cause: power up<LF>Last software reset details not available<LF>Error status: 0x00<LF>Step timer max interval 91<LF>MCU temperature: min 20.3, current 32.8, max 32.9<LF>Supply voltage: min 0.1, current 0.1, max 0.2, under voltage events: 0, over voltage events: 0, power good: no<LF>12V rail voltage: min 0.1, curre[Warning: Maximal number of characters per line exceeded! Check the line break settings in [Terminal > Settings > Text] or increase the limit in [Terminal > Settings > Advanced].]

![alt text]( image url)

I'm not using any router the connection is made by cable

Casugo

@fcwilt
Okay, thanks!!
Yes, I have a computer where I'm connecting the duet by at ethernet cable.

fcwilt

@Casugo said in Duet connection:

@fcwilt
Okay, thanks!!
Yes, I have a computer where I'm connecting the duet by at ethernet cable.

Do you know how to open the Command Line window?

Frederick

Casugo

@fcwilt
This one?

And I already plug the SD card and the config all ready goen

fcwilt

@Casugo

Yes that is the command line window.

Please enter:

ipconfig

and press the Enter key.

You should see something like this:

Windows IPconfig results.jpg

The lines
IPv4
Subnet Mask
Default Gateway
are the ones I am interested in.

Frederick

fcwilt

@Casugo

What do you think happened to the file?

Do you have a backup?

Frederick

Casugo

@fcwilt

It sounds like the configuration might be resetting itself when attempting to re-establish the connection or set the IP through YAT. What's odd is that while the macros and configurations for components like the BLtouch remain intact, it's specifically the config/g that seems to be affected.

fcwilt

@Casugo said in Duet connection:

Fantastic.

If you are directly connecting your computer to the Duet you need to set the Duet IP address to something that falls within the range of addresses your computer is expecting.

Using the subnet mask you can compute the range which is:

172.23.32.2 through 172.23.39.254 with the exception of the computers address of 172.23.36.34

Now if I were faced with having lost the contents of the SD card I would resort to connecting the SD card to my computer using an SD-to-USB adapter.

Then using a text editor, NotePad or the like, to create the bare minimum config.g file so I could then connect directly to the Duet from my computer.

Something like this:

; ===================================================================================================
; config.g - just enough to get connected - beginning of file
; ===================================================================================================

; ****************************************************************************************************
; prologue
; ****************************************************************************************************

M111 S0                ; debug off

M550 P"FT5"            ; machine name (can be anything you like)

M555 P1                ; firmware compatibility (P1=RepRap P2=Marlin P6=nanoDLP)

M575 P0 B115200 S2     ; communication parameters for USB serial
M575 P1 B115200 S1     ; communication parameters for PanelDue

M552 P172.23.32.2 S1   ; set address (P) enable Ethernet (S1)
M553 P255.255.248.0    ; set subnet mask (P)
M554 P172.23.32.1      ; set gateway (P)

M586 S1 P1 T0 R21      ; enable (S1) FTP    (P1) Disable TLS (T0) Port (R)
M586 S1 P2 T0 R2323    ; enable (S1) Telnet (P2) Disable TLS (T0) Port (R)

G21                    ; dimensions in mm
G90                    ; for X,Y,Z     use absolute coordinate values
M83                    ; for E0,E1,etc use relative coordinate values

; ===================================================================================================
; config.g - just enough to get connected - end of file
; ===================================================================================================

Casugo

@fcwilt
Hii!!!

By connecting the SD card to my computer and restoring the previous config.g file, I successfully established a connection to the DWC :D.However, I've noticed that I'm currently using the previous IP address instead of the ones you suggested.

Would it be advisable to change it to the recommended IP addresses, or should I leave it as is since the current setup is working fine?"

Thanks a lot!!!

fcwilt

@Casugo

I see the issue.

When you took a screen shot from running Windows IPconfig you selected the WiFi connection, not the Ethernet connection - and I did not notice that - my mistake.

If you ran IPconfig again and looked for the Ethernet connection it would have a similar address to that one that is working for you.

Frederick

Casugo

@fcwilt

Oh yes, my bad sorry.

Do you have any idea of why that happened and why it restart the config?

Thank you so much for your help