Connection Problems Creality CR10-S4

edited August 2020 in General
Hi all,
since about 2h I´m trying to setup my CR10S4 in repetier host.
There is somthing like a connection, but the printer does not do anything wenn sending GCode (e.g. G28 or whatever).
Here is a console-output:
Mesg:20:16:08.552: Connection started
Mesg:20:16:08.552: Dtr: false Rts: false
Mesg:20:16:08.566: Dtr: true Rts: true
Recv:20:16:09.643: start
Recv:20:16:09.643: echo: External Reset
Send:20:16:09.643: N0 M110 N0
Send:20:16:09.643: N1 M999 ; In case we did not reset recover from fatal state
Send:20:16:09.643: N1 N1 M110
Send:20:16:09.644: N3 M115 ; Check firmware and capabilities
Send:20:16:09.644: N4 M220 S100 ; set speed multiplier
Send:20:16:09.644: N5 M221 S100 ; set flow multiplier
Send:20:16:09.644: N6 M355 ; get light status
Send:20:16:09.644: N7 G92 E0 ; reset extrude rposition
Send:20:16:09.644: N8 G90 ; absolute coordinates
Send:20:16:09.644: N9 M82 ; absolute E values
Recv:20:16:09.692: Marlin 1.1.6BL_V3.1
Recv:20:16:09.692: echo: Last Updated: 2019-07-26 | Author: CR-10 S4 BLTouch
Recv:20:16:09.692: echo:Compiled: Aug 5 2019
Recv:20:16:09.692: echo: Free Memory: 1337 PlannerBufferBytes: 1232
Recv:20:16:09.692: echo:V41 stored settings retrieved (526 bytes; crc 13656)
Recv:20:16:09.692: echo: G21 ; Units in mm
Recv:20:16:09.692: echo: M149 C ; Units in Celsius
Recv:20:16:09.692: echo:Filament settings: Disabled
Recv:20:16:09.693: echo: M200 D1.75
Recv:20:16:09.693: echo: M200 D0
Recv:20:16:09.693: echo:Steps per unit:
Recv:20:16:09.693: echo: M92 X80.00 Y80.00 Z400.00 E93.00
Recv:20:16:09.693: echo:Maximum feedrates (units/s):
Recv:20:16:09.693: echo: M203 X300.00 Y300.00 Z5.00 E25.00
Recv:20:16:09.734: echo:Maximum Acceleration (units/s2):
Recv:20:16:09.734: echo: M201 X300 Y300 Z100 E1000
Recv:20:16:09.735: echo:Acceleration (units/s2): P<print_accel> R<retract_accel> T<travel_accel>
Recv:20:16:09.735: echo: M204 P500.00 R500.00 T1000.00
Recv:20:16:09.735: echo:Advanced: S<min_feedrate> T<min_travel_feedrate> B<min_segment_time_ms> X<max_xy_jerk> Z<max_z_jerk> E<max_e_jerk>
Recv:20:16:09.735: echo: M205 S0.00 T0.00 B20000 X10.00 Y10.00 Z0.40 E5.00
Recv:20:16:09.735: echo:Home offset:
Recv:20:16:09.735: echo: M206 X0.00 Y0.00 Z0.00
Recv:20:16:09.735: echo:Auto Bed Leveling:
Recv:20:16:09.735: echo: M420 S0 Z0.00
Recv:20:16:09.735: echo:Material heatup parameters:
Recv:20:16:09.755: echo: M145 S0 H185 B45 F255
Recv:20:16:09.755: M145 S1 H240 B70 F255
Recv:20:16:09.755: echo:PID settings:
Recv:20:16:09.755: echo: M301 P22.57 I1.72 D73.96
Recv:20:16:09.755: echo:Z-Probe Offset (mm):
Recv:20:16:09.755: echo: M851 Z-2.50
Send:20:16:11.298: N10 M205
Recv:20:16:14.570: echo:TF card ok
Recv:20:16:14.609: Init power off infomation.
Recv:20:16:14.609: size:
Recv:20:16:14.609: 585
Recv:20:16:14.609: init valid:
Recv:20:16:14.609: 0 (2)
Recv:20:16:14.609: echo:Unknown command: " "
Recv:20:16:14.609: ok
Recv:20:16:14.609: echo:TF card ok
Recv:20:16:14.609: Init power off infomation.
Recv:20:16:14.609: size:
Recv:20:16:14.610: 585
Recv:20:16:14.610: init valid:
Recv:20:16:14.610: 0 (2)
Recv:20:16:14.625: echo:Unknown command: " "
Recv:20:16:14.625: ok
Send:20:16:14.625: N11 G21 ; units are mm
Send:20:16:14.625: N12 M114 ; check position
Recv:20:16:14.641: echo:Unknown command: " "
Recv:20:16:14.641: ok
Mesg:20:16:45.633: Warning: Communication timeout - resetting communication buffer.
Mesg:20:16:45.633: Connection status: Buffered:93, Manual Commands: 15, Job Commands: 0
Mesg:20:16:45.633: Buffer used:93 Enforced free byte:11 lines stored:11
Send:20:16:45.633: N0 M111 S6 ; debug flags
Send:20:16:45.633: N1 M360 ; get configuration
Send:20:16:45.633: N2 M539 S1
Send:20:16:45.633: @getip
Send:20:16:45.634: N4 M115
Send:20:16:45.634: N5 M27
Send:20:16:45.634: N6 M106 S20
Send:20:16:45.634: N7 M107
Send:20:16:45.634: N9 M360
Send:20:16:45.634: @getip
Send:20:16:45.635: N1 N1 M110
Recv:20:16:45.640: echo:Unknown command: ""
Recv:20:16:45.640: ok
Recv:20:16:45.640: Slow command added:G28
Send:20:16:45.640: N2 G28
Recv:20:16:45.656: Error:Line Number is not Last Line Number+1, Last Line: 0
Recv:20:16:45.656: Resend: 1
Recv:20:16:45.656: ok
Recv:20:16:45.656: Slow command added:G28
Send:20:16:45.656: N3 G28

Printer is running original Creality Marlin 1.1.6BL_V3.1.
Before I´ve tested TH3D - same
I´m not sure what to do now :(
Anybody any suggestions?


  • My guess is that you have set firmware to Repetier-Firmware which marlin does not understand. Baud rate etc are correct since you communicate, just not successful as it seems.
  • edited August 2020
    Seems like I only had to activate Ping-Pong....
    So what I first did not understand is why Ping-Pong option not found in the wizard...
    Thx for your help!
  • Ping-Pong is the slower communication solution where you wait for "ok" from firmware for every command. Without we send as much as fit in input buffer to speed up communication. Normally both work so we use that as default.
  • Means u are using Ping-Pong as default?
    Was a little bit strange....
  • No ping pong disabled is default since that is the faster communication mode. Should only get problems when you send more data then fits into buffer meaning the buffer size in server was set too high. Normally 127 works fine while some older fimrware versions had 63 byte as limit.
  • Thx a lot for explanation! And big thx for your help!
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