Line Number is not Last Line Number

massimoacs

HiI have a problem

What means this errors:

Error:checksum mismatch, Last Line: 2

Error:Line Number is not Last Line Number+1, Last Line: 2

Error:No Line Number with checksum, Last Line: 2

error: line number is not last line number+1, last line: 12

error: no line number with checksum, last line:12

Waiting for reply

Thanks

Repetier

It is a communication error.

checksum mismatch => The given checksum could not be verified.

Error:No Line Number with checksum => If we send a checksum we need also a line number. So the command got split on transfer in 2 halfes as it seems. One with line number and no checksum and the othe rhalf.

Host fixes these error automatically. I expect there is a Resend somewhere near the messages.

Matko

Hi, I have a similar problem.

Using: windows 10 pro, Repetier Host 2.0.1 with CuraEngine

For a long time I didn't have any problems with printing even over 10 hours long prints, but for some reason in the last days I can't leave the print unattended. Every now and then this error occurs:

12:03:36.019 : Printing layer 27 of 96

12:04:33.791 : Error:checksum mismatch, Last Line: 14166

12:04:33.791 : Resend: 14167

12:04:33.807 : Error:Line Number is not Last Line Number+1, Last Line: 14166

12:04:33.807 : Resend: 14167

12:04:41.608 : Error:Line Number is not Last Line Number+1, Last Line: 14170

12:04:41.608 : Resend: 14171

12:04:47.733 : Error:Line Number is not Last Line Number+1, Last Line: 14175

12:04:47.733 : Resend: 14176

and so on. If I pause/continue the print the error goes away, but returns after a while.
In some cases it even stops the print for no visible reason.

any help would be appreciated.

Repetier

You need to enable logging and check errors in that log. This error in general happens if communication errors happen. But question is here what was send in line 14166? How did all the problem started.

One known thing is that sending M117 for ETA/Layer through host causes problems with some old firmwares. You then need to disable sending this in host printer config. But that would be an error happening already at the beginning.

Other question is did you change something? New usb cable, firmware update, new position of printer?

Matko

As far as I see I have checked logging and errors and this is all I get to see.

Firmware wasn't updated for a long time, same USB cable, same printer settings.
I got a new PLA filament, different colour, from the same manufacturer as before.
I had to change the nozzle, thermistor and nozzle throat because they were worn out and thermistor broke.

Repetier

The log is a file written in work directory (repetier.log). What you see at the bottom is a filtered subset of the last 2000 lines of communication.

BTW: Does the error fix it self? I mean host resends the line in question and the problem should be fixed. That is why we use line numbers and checksums to detect com errors.

Matko

Oh, ok. Next time I'll check the work directory, thanks.

Well up until a few days ago, that error has appeared every now and then, but there were no issues. Last print I did,the error started and then the print just stoped...it simply froze and I had to to emergency stop.

Emelinej

hello,

I have the same problem but it's never in the same place.

I work with Cultures3D, a bioprinter.

I have check my cable.

15:27:22.071 : Impression couche layer 3 sur 3
15:27:22.071 : N297 G1 F50 X49.644 Y54.649 E4.413260
15:27:22.071 : N298 G1 X49.644 Y55.217 E4.422195
15:27:22.071 : N299 G1 X49.645 Y55.946 E4.43353103
15:27:22.071 : N300 G1 X49.647 Y57.09 E4.4514684
15:27:22.071 : N301 G1 X49.648 Y57.589 E4.45928103
15:27:22.071 : N302 G1 X49.65 Y59.024 E4.4817881
15:27:22.071 : N303 G1 X49.647 Y59.705 E4.49245110
15:27:22.071 : N304 G1 X49.644 Y60.209 E4.50035100
15:27:22.071 : N305 G1 X49.644 Y60.222 E4.50056105
15:27:22.071 : N306 G1 X49.649 Y60.742 E4.50871105
15:27:22.071 : N307 G1 X49.649 Y61.116 E4.51457103
15:27:22.071 : Error:checksum mismatch, Last Line: 300
15:27:22.086 : Resend: N301 G1 X49.648 Y57.589 E4.45928103
15:27:22.086 : Resend: N302 G1 X49.65 Y59.024 E4.4817881
15:27:22.086 : Resend: N303 G1 X49.647 Y59.705 E4.49245110
15:27:22.086 : Resend: N304 G1 X49.644 Y60.209 E4.50035100
15:27:22.086 : Resend: N305 G1 X49.644 Y60.222 E4.50056105
15:27:22.086 : Error:Line Number is not Last Line Number+1, Last Line: 300
15:27:22.102 : Resend: N301 G1 X49.648 Y57.589 E4.45928103
15:27:22.102 : Resend: N302 G1 X49.65 Y59.024 E4.4817881
15:27:22.102 : Resend: N303 G1 X49.647 Y59.705 E4.49245110
15:27:22.102 : Resend: N304 G1 X49.644 Y60.209 E4.50035100
15:27:22.102 : Resend: N305 G1 X49.644 Y60.222 E4.50056105
15:27:22.102 : Error:Line Number is not Last Line Number+1, Last Line: 300
15:27:22.118 : Resend: N301 G1 X49.648 Y57.589 E4.45928103
15:27:22.118 : Resend: N302 G1 X49.65 Y59.024 E4.4817881
15:27:22.118 : Resend: N303 G1 X49.647 Y59.705 E4.49245110
15:27:22.118 : Resend: N304 G1 X49.644 Y60.209 E4.50035100
15:27:22.118 : Error:Line Number is not Last Line Number+1, Last Line: 300
15:27:22.134 : Resend: N301 G1 X49.648 Y57.589 E4.45928103
15:27:22.134 : Resend: N302 G1 X49.65 Y59.024 E4.4817881
15:27:22.134 : Resend: N303 G1 X49.647 Y59.705 E4.49245110
15:27:22.134 : Resend: N304 G1 X49.644 Y60.209 E4.50035100
15:27:22.134 : Resend: N305 G1 X49.644 Y60.222 E4.50056105
15:27:22.134 : Error:Line Number is not Last Line Number+1, Last Line: 300
15:27:22.149 : Resend: N301 G1 X49.648 Y57.589 E4.45928103
15:27:22.149 : Resend: N302 G1 X49.65 Y59.024 E4.4817881
15:27:22.149 : Resend: N303 G1 X49.647 Y59.705 E4.49245110
15:27:22.149 : Resend: N304 G1 X49.644 Y60.209 E4.50035100
15:27:22.149 : Resend: N305 G1 X49.644 Y60.222 E4.50056105
15:27:22.149 : Error:Line Number is not Last Line Number+1, Last Line: 305
15:27:22.149 : Resend: N306 G1 X49.649 Y60.742 E4.50871105
15:27:22.149 : Resend: N307 G1 X49.649 Y61.116 E4.51457103
15:27:22.149 : N308 M117 FIN 4m 23s101
15:27:22.165 : Resend: N306 G1 X49.649 Y60.742 E4.50871105
15:27:22.165 : Resend: N307 G1 X49.649 Y61.116 E4.51457103
15:27:22.165 : Resend: N308 M117 FIN 4m 23s*101

Can you help me ?