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| DDCSV1.1 4 Axis controller |
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| Benedikt:
Hello, I have just had a look at the source code and I think I have found the list of supported codes and I will post them here soon. Apart from that, I have just found the place, where inches are handled: --- Code: ---; =============== S U B R O U T I N E ======================================= ; Attributes: bp-based frame ParserGGroup6 ; CODE XREF: FindProgramBlock:loc_43FF4p ; ParserProgramBlock+A54p ... var_20 = -0x20 MOV R12, SP STMFD SP!, {R4-R7,R11,R12,LR,PC} SUB R11, R12, #4 SUB SP, SP, #8 LDR R3, =bakNcBlock LDR R3, [R3,#(dword_1279BC - 0x1279A4)] CMP R3, #0x14 BNE loc_3C570 MOV R3, #0 STR R3, [R11,#var_20] B loc_3C54C ; --------------------------------------------------------------------------- loc_3C470 ; CODE XREF: ParserGGroup6+110j LDR R7, [R11,#var_20] LDR R3, [R11,#var_20] ADD R3, R3, #0x22 LDR R1, =systemVarTable MOV R3, R3,LSL#2 MOV R2, R3,LSL#2 ADD R3, R3, R2 MOV R2, R3,LSL#4 ADD R3, R3, R2 ADD R3, R3, R1 LDR R3, [R3] MOV R0, R3 BL __extendsfdf2 MOV R3, R0 MOV R4, R1 MOV R0, R3 MOV R1, R4 MOV R2, #0 MOV R3, #0x40190000 BL __muldf3 MOV R3, R0 MOV R4, R1 MOV R5, R3 MOV R6, R4 LDR R3, [R11,#var_20] ADD R3, R3, #0xC LDR R1, =systemVarTable MOV R3, R3,LSL#2 MOV R2, R3,LSL#2 ADD R3, R3, R2 MOV R2, R3,LSL#4 ADD R3, R3, R2 ADD R3, R3, R1 LDR R3, [R3] MOV R0, R3 BL __extendsfdf2 MOV R3, R0 MOV R4, R1 MOV R0, R5 MOV R1, R6 MOV R2, R3 MOV R3, R4 BL __muldf3 MOV R3, R0 MOV R4, R1 MOV R0, R3 MOV R1, R4 BL __truncdfsf2 MOV R2, R0 LDR R3, =perUnitToPulse STR R2, [R3,R7,LSL#2] LDR R3, [R11,#var_20] ADD R3, R3, #1 STR R3, [R11,#var_20] loc_3C54C ; CODE XREF: ParserGGroup6+28j LDR R3, [R11,#var_20] CMP R3, #2 BLE loc_3C470 LDR R2, =systemVarTable LDR R3, =0x3124 LDR R2, [R2,R3] LDR R3, =perUnitToPulse STR R2, [R3,#(dword_127C08 - 0x127BFC)] B loc_3C614 ; --------------------------------------------------------------------------- loc_3C570 ; CODE XREF: ParserGGroup6+1Cj MOV R3, #0 STR R3, [R11,#var_20] B loc_3C5F4 ; --------------------------------------------------------------------------- loc_3C57C ; CODE XREF: ParserGGroup6+1B8j LDR R4, [R11,#var_20] LDR R3, [R11,#var_20] ADD R3, R3, #0x22 LDR R1, =systemVarTable MOV R3, R3,LSL#2 MOV R2, R3,LSL#2 ADD R3, R3, R2 MOV R2, R3,LSL#4 ADD R3, R3, R2 ADD R3, R3, R1 LDR R0, [R3] LDR R3, [R11,#var_20] ADD R3, R3, #0xC LDR R1, =systemVarTable MOV R3, R3,LSL#2 MOV R2, R3,LSL#2 ADD R3, R3, R2 MOV R2, R3,LSL#4 ADD R3, R3, R2 ADD R3, R3, R1 LDR R3, [R3] MOV R1, R3 BL __mulsf3 MOV R3, R0 MOV R2, R3 LDR R3, =perUnitToPulse STR R2, [R3,R4,LSL#2] LDR R3, [R11,#var_20] ADD R3, R3, #1 STR R3, [R11,#var_20] loc_3C5F4 ; CODE XREF: ParserGGroup6+134j LDR R3, [R11,#var_20] CMP R3, #2 BLE loc_3C57C LDR R2, =systemVarTable LDR R3, =0x3124 LDR R2, [R2,R3] LDR R3, =perUnitToPulse STR R2, [R3,#(dword_127C08 - 0x127BFC)] loc_3C614 ; CODE XREF: ParserGGroup6+128j SUB SP, R11, #0x1C LDMFD SP, {R4-R7,R11,SP,PC} ; End of function ParserGGroup6 ; --------------------------------------------------------------------------- off_3C61C DCD bakNcBlock ; DATA XREF: ParserGGroup6+10r off_3C620 DCD systemVarTable ; DATA XREF: ParserGGroup6+38r ; ParserGGroup6+98r ... off_3C624 DCD perUnitToPulse ; DATA XREF: ParserGGroup6+F4r ; ParserGGroup6+120r ... dword_3C628 DCD 0x3124 ; DATA XREF: ParserGGroup6+118r ; ParserGGroup6+1C0r --- End code --- TLDR: This function changes the PulseToUnit once it hits a G20. It recalculates the PulseToUnit 3 times (for the X, Y and Z axis) and when in inch mode, multiplies it by 2.390625. The calculation appears to take the steps per mm from the configuration params #34 (X-axis pulses per mm), #35 (Y-axis pulses per mm), #36 (Z-axis pulses per mm) into account when recalculating. I have just had a brief look over it and I may have overseen something important. I can easily change this multiplication constant to some other one (2.54 = 0x40228f5c for example), if this will increase the accuracy. These were G/(M?)-Codes I found by quickly searching through the huge code listing. It may not be correct and is certainly incomplete, but it is a start: --- Code: ---0 1 12 13 28 29 17 18 19 20 21 43 ? 44 ? 49 ? 53 54 55 56 57 58 59 90 91 98 ? 99 ? --- End code --- BR, Benedikt |
| WeldingRod:
Benedikt, Great work on Pandora! Thank you so much! :beer: I've been running the original DDCSV firmware on an engraver for quite a while now and it worked quite well. I'm now in the process of upping my game to FOUR :zap: axis and an OX from SMW3D (great kit, BTW). I will post the settings once I have them thrashed out. FYI, my rotary is a Haas HA5C with a fresh stepper motor (the old slo-syn one was corroded solid with globs of coolant goo and white paste. Blech.). Nice unit, BTW. 5 degrees per turn of the stepper. It looks like I may be the only person using the 4th axis. My challenge is there doesn't seem to be any way to control the feed rate on the 4th axis, other than doing the FRO and down method to set the overall feed rate to 70 or 80%. I've tried quite a few gcodes without success. The following code makes the rotary go back and forth to 30 degrees, but all four cycles are the same speed. FYI, I tried this code again on Pandora and got the same result. On the good side, the angular axis DOES work, and is repeatable (once I slow down the master feed enough so it doesn't loose steps). G1 A30 F100 G1 A0 F100 G1 A30 F10 G1 A0 F10 G1 A30 F1 G1 A0 F1 G1 A30 F0.1 I've also tried pre-setting the feed rate without any change in feed speed: G1 F10 G1 A30 G1 A0 G1 F1 G1 A30 G1 A0 Any ideas? All of the maximum speed and acceleration settings seem to be tied to manual mode, except 76, 77, 80, and 99. However, all of these are linear; the only angular ones are for manual. |
| WeldingRod:
I took Benedikt's gcode list (harvested from the firmware) and added "what the heck is that". I also cross referenced it to the manual. Gcodes on DDCSV 0 Quick cut 1 Standard cut G2 Clockwise cut Not on Benedikt's list G3 Counterclockwise cut Not on Benedikt's list G4 Dwell (milliseconds?) Not on Benedikt's list 12 Clockwise circle w/entrance and exit arcs Not in manual 13 Counter clockwise circle w/entrance and exit arcs Not in manual 17 XY plane selection 18 ZX plane selection 19 YZ plane selection 20 English units 21 Metric units 28 Return to home Not in manual 29 **no clue, used for bed leveling on 3d printers** Not in manual 43 Tool length compensation (negative) Not in manual 44 Tool length compensation (positive) Not in manual 49 Cancel tool length compensation Not in manual 53 Turn off G54-G59 offset Not in manual 54 Select G54 coordinate system 55 Select G55 coordinate system 56 Select G56 coordinate system 57 Select G57 coordinate system 58 Select G58 coordinate system 59 Select G59 coordinate system G81 Drill hole Not on Benedikt's list G82 Drill hole Not on Benedikt's list G83 Circulation drill hole Not on Benedikt's list 90 Absolute positioning 91 Increment positioning 98 ? Back to R point according to "time fixed feed" 99 ? Fixed circulation W.R.T. G81/82/83 |
| WeldingRod:
OK, got the OX moving! Re-testing the rotary axis... I was watching the display this time. There is a line on the display that says F....actual feed rate....feed set point When I run the pendant on X, y, z, I see the set point at 500 on the right, and I see the feed speed up to 500 and then slow back down, according to the acceleration. When I run the A axis program above, I see the feed set point change at each step of the program. HOWEVER, the actual feed ramps up to about 99 and then back down for ALL the various feed rates. When I slow down the master feed rate, the A rotation slows down as expected. :( on a side note, the maximum A speed seems to have gone down some. I wish I knew which setting that was! I have no idea where the 100 limit comes from! |
| WeldingRod:
High frustration! I forgot that the DDCSV has a default minimum steps per MM value of 50. The Ox has 26.670 steps per mm on X and Y, and 50 on Z. :bugeye: Is there any hope that this value is easy to change in the code? |
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