Communication timeout - reset send buffer block

I have been getting the error "Communication timeout - reset send buffer block" when I try to connect my printer.  I am using a RAMPS 1.4/Arduino mega.  Computer is running Windows 10.  I have tried different cables and baudrates, and my COM ports line up.  Can anyone help?

Comments

  • Is transfer protocol set to automatic? 
    Did you upload a compatible firmware to the arduino?
    Anything in the log? At reset the firmwares send "start" if baud rate is correct.
  • Transfer protocol is set to autodetect.  I have uploaded the latest version of Marlin to the arduino.
    Do you mean pressing the rest button on the board?

    The log also says "No start signal detected - forcing start".
  • "No start signal detected - forcing start". means it did not see the "start". Pressing reset button on arduino should show it if connection is established and baud rate is correct. RAMPS is the most widely used and tested system. Autodetect is ok. The only thing making sense is wrong baud rate. Please try different baud rates in host especially 115200 and 250000 and see if it changes.
  • Now, when I try to connect I get the error "The port 'COM6' does not exist".
  • That is easy to verify in hardware manager. All active com ports are listed there. But also make sure no other software is using the port at the moment. Windows does not support simultaneous opening of same port.
  • Regarding Com port. If you open RH select config - printer settings and hit the drop down arrow on port, you should see your available ports there. It is usually NOT com1 for the printer if shown. There should be at least one other. If I unplug my printer from the USB the available port will disappear from the choices and reappear when I plug it back in. This is before I am connected to the printer.
  • It turned out that there was a duplicate of the port I was using listed, and using the other one worked.  It is still having connection problems though.
  • Hi All :)
    Olusoji (newbie) here!
    i have tried a lot of things blindly and may need to go back and study the issues but I got this  Print-Rite/Colido DIY printer with Repetier Host 1_5_5A running on windows 7.
    My error messages:
    02:11:45.430 : Communication timeout - reset send buffer block
    02:11:55.804 : No start signal detected - forcing start
    02:12:35.880 : Communication timeout - reset send buffer block
    02:13:15.961 : Communication timeout - reset send buffer block
    02:13:56.065 : Communication timeout - reset send buffer block
    02:14:36.157 : Communication timeout - reset send buffer block

    2:15:52.129 : <Slic3r> => Exporting G-code to composition.gcode
    02:15:52.550 : <Slic3r> Done. Process took 0 minutes and 1.232 seconds
    02:15:52.550 : <Slic3r> Filament required: 254.0mm (0.6cm3)
    02:15:56.247 : Communication timeout - reset send buffer block

    iI am also getting  this message repeatedly 'unable to find entry point named 'glGenBufers' in dll open gi32.dll'

    Any nuggets of wisdom for this newbie?







  • made another attempt and this is what I got:


    02:38:30.971 : Starting object analyser ...
    02:38:30.971 : Object is manifold.
    02:38:30.971 : Analysing finished.
    02:38:36.151 : Slic3r command:C:\Program Files\Print-Rite-Repetier-Host\Slic3r\slic3r.exe --load "slic3r_settings.ini" --print-center 128.23,103.14 -o "composition.gcode" "composition.amf"
    02:38:37.368 : <Slic3r> => Processing triangulated mesh
    02:38:37.399 : <Slic3r> => Generating perimeters
    02:38:37.742 : <Slic3r> => Preparing infill
    02:38:37.805 : <Slic3r> => Infilling layers
    02:38:38.117 : <Slic3r> => Generating skirt
    02:38:38.117 : <Slic3r> => Generating brim
    02:38:38.148 : <Slic3r> => Exporting G-code to composition.gcode
    02:38:38.460 : <Slic3r> Done. Process took 0 minutes and 1.092 seconds
    02:38:38.475 : <Slic3r> Filament required: 398.4mm (1.0cm3)
    02:38:38.585 : Unable to find an entry point named 'glGenBuffers' in DLL 'opengl32.dll'.
    02:38:42.609 : Communication timeout - reset send buffer block
    02:39:22.686 : Communication timeout - reset send buffer block
    02:40:02.762 : Communication timeout - reset send buffer block
    02:40:42.839 : Communication timeout - reset send buffer block
    02:41:22.915 : Communication timeout - reset send buffer block
    02:42:02.983 : Communication timeout - reset send buffer block
    02:42:43.060 : Communication timeout - reset send buffer block
    02:42:46.289 : Starting object analyser ...
    02:42:46.289 : Object is manifold.
    02:42:46.289 : Analysing finished.
    02:42:54.105 : Slic3r command:C:\Program Files\Print-Rite-Repetier-Host\Slic3r\slic3r.exe --load "slic3r_settings.ini" --print-center 128.23,103.14 -o "composition.gcode" "composition.amf"
    02:42:55.291 : <Slic3r> => Processing triangulated mesh
    02:42:55.322 : <Slic3r> => Generating perimeters
    02:42:55.665 : <Slic3r> => Preparing infill
    02:42:55.727 : <Slic3r> => Infilling layers
    02:42:56.055 : <Slic3r> => Generating skirt
    02:42:56.071 : <Slic3r> => Generating brim
    02:42:56.086 : <Slic3r> => Exporting G-code to composition.gcode
    02:42:56.414 : <Slic3r> Done. Process took 0 minutes and 1.123 seconds
    02:42:56.414 : <Slic3r> Filament required: 398.4mm (1.0cm3)
    02:43:23.168 : Communication timeout - reset send buffer block
    02:44:03.244 : Communication timeout - reset send buffer block
    02:44:43.321 : Communication timeout - reset send buffer block
    02:45:23.397 : Communication timeout - reset send buffer block
    02:46:03.474 : Communication timeout - reset send buffer block
    02:46:43.550 : Communication timeout - reset send buffer block
    02:47:23.627 : Communication timeout - reset send buffer block
    02:48:03.719 : Communication timeout - reset send buffer block
    02:48:43.795 : Communication timeout - reset send buffer block
    02:49:23.872 : Communication timeout - reset send buffer block
    02:50:03.948 : Communication timeout - reset send buffer block
    02:50:44.025 : Communication timeout - reset send buffer block
    02:51:24.097 : Communication timeout - reset send buffer block
    02:52:04.139 : Communication timeout - reset send buffer block
    02:52:44.180 : Communication timeout - reset send buffer block
    02:53:24.196 : Communication timeout - reset send buffer block
    02:54:04.271 : Communication timeout - reset send buffer block
    02:54:44.346 : Communication timeout - reset send buffer block
    02:55:24.425 : Communication timeout - reset send buffer block
    02:56:04.514 : Communication timeout - reset send buffer block
    02:56:44.606 : Communication timeout - reset send buffer block
    02:57:24.687 : Communication timeout - reset send buffer block
    02:58:04.763 : Communication timeout - reset send buffer block
    02:58:44.837 : Communication timeout - reset send buffer block
    02:59:24.884 : Communication timeout - reset send buffer block
    03:00:04.990 : Communication timeout - reset send buffer block
    03:00:45.082 : Communication timeout - reset send buffer block
    03:01:25.160 : Communication timeout - reset send buffer block
    03:02:05.161 : Communication timeout - reset send buffer block
    03:02:45.228 : Communication timeout - reset send buffer block
    03:03:25.316 : Communication timeout - reset send buffer block
    03:04:05.387 : Communication timeout - reset send buffer block
    03:04:45.498 : Communication timeout - reset send buffer block
    03:05:25.573 : Communication timeout - reset send buffer block
    03:06:05.668 : Communication timeout - reset send buffer block
    03:06:45.775 : Communication timeout - reset send buffer block
    03:07:25.867 : Communication timeout - reset send buffer block
    03:08:05.960 : Communication timeout - reset send buffer block
    03:08:46.067 : Communication timeout - reset send buffer block
    03:09:26.131 : Communication timeout - reset send buffer block
    03:10:06.141 : Communication timeout - reset send buffer block
    03:10:46.206 : Communication timeout - reset send buffer block
    03:11:26.309 : Communication timeout - reset send buffer block
    03:12:06.401 : Communication timeout - reset send buffer block
    03:12:46.431 : Communication timeout - reset send buffer block
    03:13:26.492 : Communication timeout - reset send buffer block
    03:14:06.600 : Communication timeout - reset send buffer block
    03:14:46.676 : Communication timeout - reset send buffer block
    03:15:26.753 : Communication timeout - reset send buffer block
    03:16:06.854 : Communication timeout - reset send buffer block
    03:16:46.870 : Communication timeout - reset send buffer block
    03:17:26.968 : Communication timeout - reset send buffer block
    03:18:07.020 : Communication timeout - reset send buffer block
    03:18:47.074 : Communication timeout - reset send buffer block
    03:19:27.173 : Communication timeout - reset send buffer block
    03:20:07.277 : Communication timeout - reset send buffer block
    03:20:47.357 : Communication timeout - reset send buffer block
    03:21:27.430 : Communication timeout - reset send buffer block
    03:22:07.510 : Communication timeout - reset send buffer block
    03:22:47.584 : Communication timeout - reset send buffer block
    03:23:27.664 : Communication timeout - reset send buffer block
    03:24:07.734 : Communication timeout - reset send buffer block
    03:24:47.754 : Communication timeout - reset send buffer block
    03:25:27.834 : Communication timeout - reset send buffer block
    03:26:07.904 : Communication timeout - reset send buffer block
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    03:27:28.064 : Communication timeout - reset send buffer block
    03:28:08.134 : Communication timeout - reset send buffer block
    03:28:48.214 : Communication timeout - reset send buffer block
    03:29:28.286 : Communication timeout - reset send buffer block
    03:30:08.288 : Communication timeout - reset send buffer block
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    03:34:08.751 : Communication timeout - reset send buffer block
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    03:35:28.914 : Communication timeout - reset send buffer block
    03:36:08.994 : Communication timeout - reset send buffer block
    03:36:49.066 : Communication timeout - reset send buffer block
    03:37:29.146 : Communication timeout - reset send buffer block
    03:38:09.226 : Communication timeout - reset send buffer block
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    03:45:30.066 : Communication timeout - reset send buffer block
    03:46:10.147 : Communication timeout - reset send buffer block
    03:46:50.217 : Communication timeout - reset send buffer bl




  • Did the printer every respond on any command? If not, your baud rate may be wrong or you have used the wrong port at all. Assuming you did not change the ColLiDo defaults baud rate should match, but you never know. Port is set to auto be default so it uses the first available com port, which is not necessary the right one if you have multiple ports.
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