@deckingman It appears there's a bug or change in Simplify3d. If you state the bed temps it then follows it with two identical lines with -1 as the target temperature!! I think that's why the M116 was there to circumvent that behaviour. It puts M104 followed by M109 as defaults, maybe for compatability with Marlin as well. In the end this is the script that works without M140 or M190 defined at all. It puts the bed heater values in the correct place in the Gcode file just prior to the script entries.

G90
M82
M106 S0
G21 ;metric values
G90 ;absolute positioning
G1 X0 Y0 Z15 F3000
M564 S0
M104 S[extruder0_temperature] ;Start heating extruder
M109 S[extruder0_temperature] ;Wait for extruder to reach temp before proceeding

Thanks Ian - I'll take the M104, M116 and M140 out and see what happens.

G10 command? Has three different meanings on the Gcode wiki page.
Retract, Set workplace coordinate, or Tool offset. I don't want to do any of those. Retract was done end of last job, workplace co-ord's in probing sequence at start of script, tool offset in config.g. Looks like a case of "make your minds up what it is reprap!" command Cura and Simplify3D only understand it as a retract command as do every other major flavour of gcode.

Steve

My startup files have the following sequence

M140 S90 ;Start heating bed
M190 S90 ;Wait for bed to reach temp before proceeding
M116
G21 ;metric values
G90 ;absolute positioning
G1 X0 Y0 Z15 F3000
M564 S0
M104 S240 ;Start heating extruder
M109 S240 ;Wait for extruder to reach temp before proceeding

Problem is it's heating the extruder THEN moving to X0 Y0 Z15

Only started happening after updating to

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet WiFi 1.02 or later
Firmware Version: 2.02(RTOS) (2018-12-24b1)
WiFi Server Version: 1.22
Web Interface Version: 1.22.6

Step resonance causes wavy patterns on the outer surface. All stepper motors have a bad area related to resonance, easiest way is simply avoid continuous movement at that speed, you can tune them somewhat using the Leadshine software. Unless you replace your leadscrews with ballscrews 1200 pulses per rev is overkill, backlash will eat a lot of the perceived accuracy but I dont know the if microsteps can be altered the D508 , I've only ever used the D1008's,

Looks very much like a mechanical problem to me, as dc42 asks, what's the pitch of bands? Check everything is tight, grub screws on motors, pulleys etc and extruder.

We're planning to label the connectors Motor0, Motor1, Out0, Out1 etc. Some of the Out ports will have a higher power capability than others, but all will be configurable as motors, fans or general purpose output.

Labelling as you are planning - Option 3 is fine if this is aimed at CNC machining users but not sure how a slicer would cope - post processors seem to be sadly missing from the usable ones.

@mperdue

M140 S[bed1_temperature] ;Start heating bed
M190 S[bed1_temperature] ;Wait for bed to reach temp before proceeding

and

M104 S[extruder0_temperature] ;Start heating extruder
M109 S[extruder0_temperature] ;Wait for extruder to reach temp before proceeding

Work fine for me

@dc42 Thanks for that - problem solved. Configurator put that in - maybe I answered incorrectly.

@dc42 - My M563 is M563 P0 D0 H1 F1 are you saying it should be M563 P0 D0 H1 F0?

The M563 command description is confusing "Fnnn Fan(s) to map fan 0 to (RepRapFirmware 1.16 and later)"

@phaedrux - I thought I had a work around, there's a plugin for an enclosure fan that allows parameters so I set
M106 P1 S255 I0 F500 H1 T45 - it puts it right before the pre code. Guess what M107 turns it off! A bug in duet firmware in my opinion - it should, if it works, just turn off P0, not all fans.

@phaedrux - setting to 0% still sticks M107 in and no M106 anywhere. Putting a value other than 0% in it puts in M106 Sxxx in relevant place.

M104 S230 ;Start heating extruder
M109 S230 ;Wait for extruder to reach temp before proceeding
G92 E0
G1 F1500 E-3
;LAYER_COUNT:50
;LAYER:0
M107
G0 F3600 X9.991 Y-18.08 Z0.3
;TYPE:SKIRT