Cinci. Post change for threading

[CarbonCAD]

I have a post from our reseller and it works decent out of the box, but the machine requires a special K value (lead/rev/2Pi)*1000 a 1-8 thread has a value of 199 according to the manual (I get 196) I am not having any luck at changing the post to get this. Can anyone help?

 

pcirout #Output to NC of circular interpolation

arctype$ = sav_arctype

if arc_pitch$, #Helical interpolation

[

kpitch = abs((zinc/fmtrnd(sweep$))*360)

sav_arctype = arctype$ #Save current arctype setting

arctype$ = one #Force IJK output with absolute arc center

if plane$ = zero, result = nwadrs(strk, kpitch) #XY Plane

if plane$ = one, result = nwadrs(stri, kpitch) #YZ Plane

if plane$ = two, result = nwadrs(strj, kpitch) #XZ Plane

]

else, kpitch = zero

pcan1, pbld, n$, `sgfeed, sgplane, sgcode, sgabsinc, pccdia,

pxout, pyout, pzout, pcout, parc, [if kpitch, *kpitch],

feed, strcantext, scoolant, e$

[Bryan Johnson]

double check the values that are used in your formula. “zinc” or “sweep” may need to be updated.

 

Below is the formula that I have used for this.

 

if sweep$ <> 0, kh = (360 / abs(sweep$)) * abs(z$ - prv_z$)

[CarbonCAD]

So I put the formula into my calculator to see if everything is ok. I get .196 and the manual comes out to .199. I put .125/2*Pi and got .196 and the second time .125/(2*Pi) getting .199. The order of operations tells me that multiplication is first (ppmdas). Is the difference in the rounding of Pi? It seems I will need to watch and include the parenthesis.