Work Offsets

[specv]

I am wondering what to change in the post processor so that i dont have the same work offset for every operation(if there are 5 operations for one endmill and they are all using g54) how can i change it so that the work offset only gets called up once, until it switches to a new work offset? same goes for the comment line

thanks in advance

Pete

[Guest CNC Apps Guy 1]

Change this;

force_wcs : yes #Force WCS output at every toolchange?

 

To This;

force_wcs : no #Force WCS output at every toolchange?

 

HTH

[specv]

thanks james

that works to some degree but i want the work offset after a tool change but just not in every operation for that tool.

[Guest CNC Apps Guy 1]

At "ptlchg0" remove "pwcs". That should do it.

 

HTH

[specv]

what happens when i change work offsets while using the same tool?

[Guest CNC Apps Guy 1]

You won't get a change. If you need this capability you'll need ot build some logic like if the previous WCS is equal to the WCS then go to another section in the post or else output the WCS.

 

HTH

[specv]

this is why i was posting the question because im not sure what to change it to.

[Guest CNC Apps Guy 1]

Like I said, you'll need to build some logic to check what the previous value of WCS, compare it to the current WCS value and output WCS only if there is a change.

[specv]

i guess that is what i was asking,i know what i need to do now but how to do it is another story. i have made a lot of post edits but ive never changed anything like this, so what i need to know is what are the variables for the wcs and previous wcs

 

[ 06-26-2003, 04:50 PM: Message edited by: specv ]

[Guest CNC Apps Guy 1]

Let's see...

 

I believe previous values are automatically stored if memory serves. So you would need something like this in ptlchg0;

 

ptlchg0 #Call from NCI null tool change (tool number repeats)

pcuttype

pcom_moveb

c_mmlt #Multiple tool subprogram call

comment

pcan

result = newfs(15, feed) #Reset the output format for 'feed'

pbld, n, sgplane, e

pspindchng

pbld, n, scoolant, e

if mi1 > one & workofs <> prv_workofs,

[

sav_absinc = absinc

absinc = zero

pbld, n, sgabsinc, pwcs, pfxout, pfyout, pfzout, pfcout, e

pe_inc_calc

ps_inc_calc

absinc = sav_absinc

]

else,

[

sav_absinc = absinc

absinc = zero

pbld, n, sgabsinc, pfxout, pfyout, pfzout, pfcout, e

pe_inc_calc

ps_inc_calc

absinc = sav_absinc

[

if cuttype = zero, ppos_cax_lin

if gcode = one, plinout

else, prapidout

pcom_movea

c_msng #Single tool subprogram call

 

Hope the formatting comes out.

 

I believe this will do what you want. You may need ot strip out some stuff depending on how your post is configured.

 

HTH

 

[ 06-26-2003, 05:35 PM: Message edited by: James Meyette ]

[specv]

Thanks James

for some reason when we got our post this code all had ## in front of it. I cant think of any reason why, can you?

 

if mi1 > one & workofs <> prv_workofs,

[

sav_absinc = absinc

absinc = zero

pbld, n, sgabsinc, pwcs, pfxout, pfyout, pfzout, pfcout, e

pe_inc_calc

ps_inc_calc

absinc = sav_absinc

]

 

[ 06-27-2003, 09:04 AM: Message edited by: specv ]

[Mark C]

I believe that you would want to remove those ##'s. This section will output the WO (as well as X Y Z and any rotary as well as G90/G91) if it is changed from previous. The # characters will keep it from being acted upon.