Hello,

sorry for my english.

i have with arduino over USB and the serialDRO.lua a MPG. All function is ok. BUT i can't switch JOG Modus. INC Modus all ok.

   local JogVel = mc.MC_JOG_TYPE_VEL;
   mc.mcJogSetType(inst, 0, JogVel)
      mc.mcCntlSetLastError(inst, "Jog Cont")

Please can you me help for this Problem???
    elseif Command == "1" then
mc.mcJogSetInc(inst, 0, .001)
mc.mcJogSetInc(inst, 1, .001)
mc.mcJogSetInc(inst, 2, .001)
p:write("I 1\n", 5)
mc.mcCntlSetLastError(inst, "Jog Increment 0.001")
    elseif Command == "2" then
mc.mcJogSetInc(inst, 0, .010)
mc.mcJogSetInc(inst, 1, .010)
mc.mcJogSetInc(inst, 2, .010)
p:write("I 2\n", 5)
mc.mcCntlSetLastError(inst, "Jog Increment 0.010")
    elseif Command == "3" then
mc.mcJogSetInc(inst, 0, .100)
mc.mcJogSetInc(inst, 1, .100)
mc.mcJogSetInc(inst, 2, .100)
p:write("I 3\n", 5)
mc.mcCntlSetLastError(inst, "Jog Increment 0.100")
    elseif Command == "4" then
local JogVel = mc.MC_JOG_TYPE_VEL;
mc.mcJogSetType(inst, 0, JogVel)
mc.mcCntlSetLastError(inst, "Jog Cont")


I am not sure there is a mc.MC_JOG_TYPE_VEL.
I think you want to use mc.JogGetVelocity(inst, axisID)

Hello,

i have change to mc.JogGetVelocity(inst, 0), but it comes a failue

the value is "NIL".

I have tested with
mc.mcJogSetType(inst, 0, 1) and in mach4 comes no failure but the inc Modus remains. the steps remains example 0,1mm.
It switched not to Jog Modus.

I need the mc.mcJogIncStart and mc.mcJogIncStop?
I think this is only time steps.

I dont know.
I do not use it.
Hopefully someone who knows this better can help you out.

mcJogSetType() works with mcJogGetType() so that scripts can use the API to coordinate jogging.  This is helpful for building control panels and such where a hardware jog button is connected to a physical input and a hardware switch is connected to multiple inputs.  Assume the following code is put in the screen load script:
function JogStart(mInst, axis, dir)
    local type = 0
    type, rc = mc.mcJogGetType(mInst, axis)
    if (rc == mc.MERROR_NOERROR) then
        if (type == mc.MC_JOG_TYPE_VEL) then -- velocity
            mc.mcJogVelocityStart(mInst, axis, dir)
        else                -- incremental
            local inc = 0
            inc, rc = mc.mcJogGetInc(mInst, axis)
            if (rc == mc.MERROR_NOERROR) then
                inc = inc * dir
                mc.mcJogIncStart(mInst, axis, inc)
            end
        end
    end
end

function JogStop(mInst, axis)
    local type = 0
    type, rc = mc.mcJogGetType(mInst, axis)
    if (rc == mc.MERROR_NOERROR) then
        if (type == mc.MC_JOG_TYPE_VEL) then -- velocity
            mc.mcJogVelocityStop(mInst, axis)
        end
    end
end

A call to mcJogSetType() will change the way the above functions work.  Also, a call to mcJogSetIncr() will change the increment used if the jog is an incremental jog. 

mcJogSetType() will also modify the following Mach registers, depending on the axis parameter:
core/inst/JogTypeX
core/inst/JogTypeY
core/inst/JogTypeZ
core/inst/JogTypeA
core/inst/JogTypeB
core/inst/JogTypeC

mcJogSetIncr() will also modify the following Mach registers, depending on the axis parameter:
core/inst/JogIncX
core/inst/JogIncY
core/inst/JogIncZ
core/inst/JogIncA
core/inst/JogIncB
core/inst/JogIncC

What these functions do not do is modify the jog types or increments that are used by the screen.  The screen maintains its' own jogging parameters.  These APIs were developed primarily for the PMC functionality or plugin development.  But they can be used by scripts in the manner shown above. 

Steve