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    M122 does not work from DWC console

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    • dc42undefined
      dc42 administrators
      last edited by

      Are you saying that after the problem occurs, most commands sent from the GCode Console don't work?

      A few commands (from memory M112 and M122, I can't remember about M999) are recognised early and bypass the normal command queue.

      Duet WiFi hardware designer and firmware engineer
      Please do not ask me for Duet support via PM or email, use the forum
      http://www.escher3d.com, https://miscsolutions.wordpress.com

      Adrian52undefined 1 Reply Last reply Reply Quote 0
      • Adrian52undefined
        Adrian52 @dc42
        last edited by

        @dc42 my impression is that quite a few commands do work. I will do a more comprehensive check next time it happens

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        • Adrian52undefined
          Adrian52
          last edited by

          I tried again today, and the output of the DWC g-code console is here:
          0_1536253098443_20180906m122 from dwc.txt
          M122 just over 1hr after the print finished did not give a response, although there was no disconnect/reconnect this time. I then tried M665, M666, head movement, homing and adjusted the hot end temperature, and listed the sd card with M20 - all seemed to work. Re trying M122 worked this time. Simply retrying M122 has not previously worked. Will check again when I get the full disconnect response to M122.

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          • dc42undefined
            dc42 administrators
            last edited by

            Added to my list to look at.

            Duet WiFi hardware designer and firmware engineer
            Please do not ask me for Duet support via PM or email, use the forum
            http://www.escher3d.com, https://miscsolutions.wordpress.com

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            • sigxcpuundefined
              sigxcpu
              last edited by sigxcpu

              Here's a traffic capture when M122 fails on DWC (but works on serial & telnet).

              T 2018/09/08 23:46:05.963684 192.168.27.112:55398 -> 192.168.27.8:80 [AP] #47
              GET /rr_gcode?gcode=M122 HTTP/1.1.
              Host: 192.168.27.8.
              Accept-Encoding: gzip, deflate.
              Connection: keep-alive.
              Accept: application/json, text/javascript, */*; q=0.01.
              User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_0) AppleWebKit/602.2.14 (KHTML, like Gecko) Version/10.0.1 Safari/602.2.14.
              Referer: http://192.168.27.8/.
              Accept-Language: en-us.
              X-Requested-With: XMLHttpRequest.
              .
              
              
              T 2018/09/08 23:46:05.969594 192.168.27.8:80 -> 192.168.27.112:55398 [AP] #48
              HTTP/1.1 200 OK
              Cache-Control: no-cache, no-store, must-revalidate
              Pragma: no-cache
              Expires: 0
              Access-Control-Allow-Origin: *
              Content-Type: application/json
              Content-Length: 12
              Connection: close
              
              {"buff":255}
              
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              • dc42undefined
                dc42 administrators
                last edited by

                That response means that you have already sent some commands to be executed from DWC, that are waiting to be executed, and the input pipeline is full. So the M122 command has probably not completed. Perhaps you need to make more rr_reply calls to retrieve the M122 response.

                Duet WiFi hardware designer and firmware engineer
                Please do not ask me for Duet support via PM or email, use the forum
                http://www.escher3d.com, https://miscsolutions.wordpress.com

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                • Adrian52undefined
                  Adrian52
                  last edited by

                  M122 still not working consistently from dwc using 2.02rc4/1.22.5. As before, usually works after one print, but subsequently causes no response but a brief disconnection /reconnect. M122 works from yat. Tried M122 from android app, and this also gave disconnect/reconnect response, seen simultaneously on the pc dwc.

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                  • dc42undefined
                    dc42 administrators
                    last edited by

                    How many clients are logged on to the Duet when you send M122? I'm wondering whether it could by running out of buffers if you have multiple web clients logged on.

                    Duet WiFi hardware designer and firmware engineer
                    Please do not ask me for Duet support via PM or email, use the forum
                    http://www.escher3d.com, https://miscsolutions.wordpress.com

                    Adrian52undefined 1 Reply Last reply Reply Quote 0
                    • Adrian52undefined
                      Adrian52 @dc42
                      last edited by

                      @dc42 I get the problem with just a windows 10 pc running Firefox connected. Incidentally, only M122 seems to be affected - I can continue printing with no obvious problems.

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                      • chrishammundefined
                        chrishamm administrators
                        last edited by

                        I have never seen this for a particular code like M122. But there is a known issue that occurs when you run two or more instance of DWC on the same device/IP: In this case only one of the DWC instances will actually receive the G-code reply and the others will just print an empty/successful response. Please verify this again.

                        Duet software engineer

                        Adrian52undefined 1 Reply Last reply Reply Quote 0
                        • Adrian52undefined
                          Adrian52 @chrishamm
                          last edited by

                          @chrishamm I have uninstalled 'find my duet' from my phone, and the only instance of dwc I have running is on my win10/Firefox pc. Still get the same problem - there is a 10 second pause after sending M122, then a disconnect /reconnect. Just trying another print without rebooting the duet.

                          Adrian52undefined 1 Reply Last reply Reply Quote 0
                          • Adrian52undefined
                            Adrian52 @Adrian52
                            last edited by

                            @adrian52 Print completed fine. M122 from YAT gave this . M122 from DWC gave
                            alt text
                            The earlier two disconnects were responses to M122 before the print.

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