G-code explanation

[midnightrambler]

I have been using a manual for a Billco CNC1000 glass cutting table na dunderstand most of what I see (in direct relation to the glass cutting plan), But I do have some questions which are not answered for me in this manual and I havent been able to find a direct answer yet. I will use one of the generated programs that I have that works.

%65301 ----------------------------------------Filename

N0(3.00CL++3.00CL) ----------------------------Basic header
N1P1=K0
N2G25N9949

N100(LAY 2 CUT 3 3 OF 84X120 3.00CL++3.) ---Body of cutting plan
N101G90 --------------------------------------Gcode I understand
.
.
N132M0
N133G25N9950

N9898(END OF BATCH) --------------------------Basic footer
N9899G25N9998

N9949M00 ---------------------------------------Execution sequence
N9950P1=P1F1K1
N9951P2=P1F2K1
N9952G26N100
N9953P2=P1F2K2
N9954G26N100
N9955P2=P1F2K3
N9956G26N100
N9998(END OF BATCH)

I understand the cutter specifics (hence only the first and last 2 lines of the cutting table gcode). But the other sections (other than filename) I have no manual for. The section names are mine and/or my interpretation of what they are.

What I can tell you is that in this particular program, the cutting plan is being executed 3 times, but im not quite sure how the P1 (lines 1 & 9950) and p2 commands (lines 9951, 9953, & 9955) and the G25 (lines 2, 133, & 9899) & G26 (lines 9952, 9954, & 9956) work to control the cutting.

Could someone please fill me in on what I am missing by hopefully adding comments to the above code so that I can understand it.

Thanks very much