M6 remap did not return a value

greg23_78
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2 years 7 months ago #296651 by greg23_78

M6 remap did not return a value was created by greg23_78

When I tried to improve my M6 remap using If Elseif Else Endif Example, I got the error message "the M6 remap procedure toolchange did not return a value".

for resume

-Spindle position
-if tool in spindle = 0 Do ...
-Elseif tool in spindle > 0 Do ...
-Elseif selected tool = 0 D0 ...
-Else DO nothing

below is the modified code:

Code:

o<toolchange> sub

; Check to make sure z axis is homed
M66 P8 L0
    o001 if [#5399 LT 0]
        (abort, z axis is not homed)
    o001 endif

G53 G0 Z 635  ;Move Z to load position

M66 P9 L3 Q1 (wait HIGH to the Z toolchange position)
    o002 if [#5399 LT 0]
        (abort, Z is not in position)
    o002 endif

M66 P12 L3 Q10 ;(wait vfd is ready)

M64 P6 ; sensor position activate

M4 S6 ;(turn spindle cw S50 tr/min)

G4 P2  ; Wait 2 seconds

M66 P7 L1 Q20 ;(wait falling edge to the proximity sensor of the spindle)

M5 ;(stop spindle)

M66 P7 L3 Q1 ;(If proximity sensor is not high abort)
    o003 if [#5399 LT 0]
       (abort, spindle is not oriented)
   o003 endif

M65 P6 ; sensor position deactivate

; only unload the tool if there is a tool in the spindle
; This assumes that the carousel is already aligned correctly.
; It is important to unload the tool before shutting down the machine.

;--------------------------------------------------------------------------------------- Select_tool > 0 And tool_in_spindle > 0---------------------------------------------

o100 if [#<tool_in_spindle> GT 0]

    o110 if [#<tool_in_spindle> NE #<current_pocket>]

        M68 E0 Q#<tool_in_spindle> ;set the carousel to move to the right pocket

        M64 P0  ;Enable Carousel

        G4 P2  ; Wait 2 seconds

        M66 P0 L3 Q120 ; wait for carousel-ready = true
            o111 if [#5399 LT 0]
                (abort, carousel not finished)
            o111 endif
    
    M65 P0  ;Disable carousel enable
    
    o110 endif

    M64 P1 ; Extend tool changer arm

    G4 P3    ; Wait 3 seconds

    M66 P2 L3 Q5 ; wait for carousel-extended = true
        o112 if [#5399 LT 0]
            (abort, carousel not extended)
        o112 endif
    
    M66 P1 L3 Q5 ; wait for carousel-retracted = false
        o114 if [#5399 GT 0]
            (abort, carousel still retracted)
        o114 endif

    M64 P3  ;Release tool

    M66 P5 L3 Q5 ; wait for tool-released = true
        o116 if [#5399 LT 0]
            (abort, tool not released)
        o116 endif

    M64 P2  ;down tool changer arm

    M66 P4 L3 Q8 ; wait for carousel-up = true
        o117 if [#5399 LT 0]
            (abort, carousel not extended)
        o117 endif
    
    M66 P3 L3 Q5 ; wait for carousel-down = false
        o118 if [#5399 GT 0]
            (abort, carousel still retracted)
        o118 endif

    M68 E0 Q#<selected_pocket> ;set the carousel to move to the right pocket

    M64 P0  ;Enable Carousel

        M66 P0 L3 Q120 ; wait for carousel-ready = true
        o119 if [#5399 LT 0]
            (abort, carousel not finished)
        o119 endif
    
    M65 P0  ;Disable carousel enable

    M64 P3  ;Release tool

    M66 P5 L3 Q5 ; wait for tool-released = true
        o120 if [#5399 LT 0]
            (abort, tool not released)
        o120 endif

    M64 P5 ;Turn on air blast
    G4 P2  ;Wait 2 seconds
    M65 P5 ;Turn off air blast

    M65 P2 ;down tool changer arm

    M66 P3 L3 Q8 ; wait for carousel-down = true
        o121 if [#5399 LT 0]
            (abort, carousel not extended)
        o121 endif
    
    M66 P4 L3 Q5 ; wait for carousel-up = false
        o122 if [#5399 GT 0]
            (abort, carousel still retracted)
        o122 endif

    M65 P3  ;Clamp tool (turn unclamp off)

    G4 P2    ; Wait 2 seconds

    M66 P6 L3 Q5  ;Verify that tool is clamped
        o123 if [#5399 LT 0]
            (abort, tool not clamped)
        o123 endif

    M65 P1  ;Retract tool changer arm

    G4 P1    ; Wait 5 seconds

    M66 P1 L3 Q5 ; wait for carousel-retracted = true
        o124 if [#5399 LT 0]
            (abort, carousel not retracted)
        o124 endif
    
    M66 P2 L3 Q5 ; wait for carousel-extended = false
        o125 if [#5399 GT 0]
            (abort, carousel still extended)
        o125 endif


;--------------------------------------------------------------------------------------- Select_tool > 0 And tool_in_spindle = 0---------------------------------------------

o100 elseif [#<tool_in_spindle> LE 0]

    M68 E0 Q#<selected_pocket> ;set the carousel to move to the right pocket

    M64 P0  ;Enable Carousel

    G4 P2  ; Wait 2 seconds

    M66 P0 L3 Q120 ; wait for carousel-ready = true
        o201 if [#5399 LT 0]
            (abort, carousel not finished)
        o201 endif
    
    M65 P0  ;Disable carousel enable

    M64 P2  ;Down tool changer arm, might already be down

    M66 P4 L3 Q8 ; wait for carousel-up = true
        o202 if [#5399 LT 0]
            (abort, carousel not extended)
        o202 endif
    
    M66 P3 L3 Q5 ; wait for carousel-down = false
        o203 if [#5399 GT 0]
            (abort, carousel still retracted)
        o203 endif
    

    M64 P1  ;Extend carousel, might already be extended

    G4 P2    ; Wait 2 seconds

    M66 P2 L3 Q8 ; wait for carousel-extended = true
        o204 if [#5399 LT 0]
            (abort, carousel not extended)
        o204 endif
    
    M66 P1 L3 Q5 ; wait for carousel-retracted = false
        o205 if [#5399 GT 0]
            (abort, carousel still retracted)
        o205 endif

    M64 P3  ;Release tool

    M66 P5 L3 Q5 ; wait for tool-released = true
        o206 if [#5399 LT 0]
            (abort, tool not released)
        o206 endif

    M64 P5 ;Turn on air blast
    G4 P2  ;Wait 2 seconds
    M65 P5 ;Turn off air blast

    M65 P2 ;down tool changer arm

    M66 P3 L3 Q8 ; wait for carousel-down = true
        o207 if [#5399 LT 0]
            (abort, carousel not extended)
        o207 endif
    
    M66 P4 L3 Q5 ; wait for carousel-up = false
        o208 if [#5399 GT 0]
            (abort, carousel still retracted)
        o209 endif

    M65 P3  ;Clamp tool (turn unclamp off)

    G4 P2    ; Wait 2 seconds

    M66 P6 L3 Q5  ;Verify that tool is clamped
        o210 if [#5399 LT 0]
            (abort, tool not clamped)
        o210 endif

    M65 P1  ;Retract tool changer arm

    G4 P1    ; Wait 5 seconds

    M66 P1 L3 Q5 ; wait for carousel-retracted = true
        o211 if [#5399 LT 0]
            (abort, carousel not retracted)
        o211 endif
    
    M66 P2 L3 Q5 ; wait for carousel-extended = false
        o212 if [#5399 GT 0]
            (abort, carousel still extended)
        o212 endif


;--------------------------------------------------------------------------------------- Select_tool = 0 And tool_in_spindle > 0---------------------------------------------

o100 elseif [#<selected_tool> EQ 0]

    o310 if [#<tool_in_spindle> NE #<current_pocket>]

        M68 E0 Q#<tool_in_spindle> ;set the carousel to move to the right pocket

        M64 P0  ;Enable Carousel

        G4 P2  ; Wait 2 seconds

        M66 P0 L3 Q120 ; wait for carousel-ready = true
            o301 if [#5399 LT 0]
                (abort, carousel not finished)
            o301 endif
    
        M65 P0  ;Disable carousel enable
    
    o310 endif

    M64 P1 ; Extend tool changer arm

    G4 P3    ; Wait 3 seconds

    M66 P2 L3 Q5 ; wait for carousel-extended = true
        o311 if [#5399 LT 0]
            (abort, carousel not extended)
        o311 endif
    
    M66 P1 L3 Q5 ; wait for carousel-retracted = false
        o312 if [#5399 GT 0]
            (abort, carousel still retracted)
        o312 endif

    M64 P3  ;Release tool

    M66 P5 L3 Q5 ; wait for tool-released = true
        o313 if [#5399 LT 0]
            (abort, tool not released)
        o313 endif

    M64 P2  ;down tool changer arm

    M65 P1  ;Retract tool changer arm

    G4 P1    ; Wait 5 seconds

    M66 P1 L3 Q5 ; wait for carousel-retracted = true
        o314 if [#5399 LT 0]
            (abort, carousel not retracted)
        o314 endif
    
    M66 P2 L3 Q5 ; wait for carousel-extended = false
        o315 if [#5399 GT 0]
            (abort, carousel still extended)
        o315 endif

    M65 P2

o100 else

 M2

o100 endif

M2

o<toolchange> endsub

I ran this remap and it performed the first condition, but did not implement the tool number in the spindle (remaining at 0). How can I resolve this error message?

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andypugh
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Administrator

2 years 7 months ago #297081 by andypugh

Replied by andypugh on topic M6 remap did not return a value

I think that the problem might be with the use of M2 inside the subroutine. I think that this is will stop execution.
Your remapped G-code routine should run to an endsub, and should probably return a value to indicate to calling code whether it succeeded or not.

If you look at the G-code snippets here: linuxcnc.org/docs/stable/html/remap/remap.html they typically look like O<remap> endsub [1]
In this example the [1] is the return value.

So, get rid of the M2 commands (use an (abort, ...) instead and add a return value.

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