Re: getting started with CNC

Jim Wilson wrote:
Bill Roberto wrote... 


But you're saying the cable should be like this:

    DB9              DB25
TXD   3  -----\/-----  2  TXD
RXD   2  -----/\-----  3  RXD
RTS   7  -,        ,-  4  RTS
CTS   8  -'        `-  5  CTS
DSR   6  -,        ,-  6  DSR
CD    5  -|        |-  8  CD
DTR   1  -'        `- 20  DTR
SG    4  ------------  7  SG

(I'm guessing there's another RTS/CTS jumper on the DB9 side.) Right? Or still shaky? 

Here is the exact pin to pin I use on all Fanucs, Fadals, and Haas'.

DB9  2 ------------ DB25 2
     3 ------------      3
     5 ------------      7
                         4&5 jump
                         6,8,& 20 jump





Sounds like this data could be embedded in the part program, but you're saying that it is usually entered manually just before runtime. Did I get that right? 

The program references pre set offset tables via G code.
i.e.

%
O0001(SAMPLE)
G0G40G49G80G90
T1M6
S5000M3
G54X-2.Y0 (PICK UP FIXTURE OFFSET)
G43Z1.H1M8 (PICK UP HEIGHT OFFSET)
Z.1
G1Z-.5F50.
G41X-1.D31 (PICK UP CUTTER COMP OFFSET)
X3.
Y-3.
X0
Y1.
G40Y2.
G0Z1.M9
G91G28Z0
G90
M30
%



Send Z axis home. Zero the digital readout if necessary. Touch the top of your part with your tool. (or whatever you are programming as zero). The value in the digital readout is your Z offset value. 


Ok. Same as I do now on my manual mill.

Thanks again for all your help. Machine arrives tomorrow.

Jim 

Good luck.
.

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