I could use an assit creating variable program

[gogego]

We have a sl 25 mf-t6 I think, Fanuc control, I want to try some conditional programming, IFs and GOTOs and such I have the prog and op manual here with me but cannot pinpoint this topic, is it in the FANUC book Ileft at work?
I think the machine was purchased new in the mid 90's not entirely sure which version FANUC we have , our FANUC book has 16 18 on the cover...

Can anyone give me the proper format for IF/GOTO statements
ie
G0Z.2
X[#100] Z.1
G71U.150
G71P21Q22U.02W.005F.014
N21G0X[#101]Z.05
G01Z-[#107]
?? IF [#102 EQ 0] N22
X[#102]
Z-[#107+#108]
?? IF [#103 EQ 0] N22
blah blah blah
N22X[#100]
IS THIS ON THE RIGHT TRACK?

[Dan Fritz]

G0Z.2
X[#100] Z.1
G71U.150
G71P21Q22U.02W.005F.014
N21G0X[#101]Z.05
G01Z-[#107]
IF [#102 EQ 0] GOTO22
X[#102]
Z-[#107+#108]
IF [#103 EQ 0] GOTO22
blah blah blah
N22X[#100]

[christinandavid]

IF[#102EQ0] GOTO22

EQ is equal to
NE not equal to
LT less than
GT greater than
LE less than or equal to
GE greater than or equal to

If you want to combine conditional statements: -

IF[[#102EQ0]AND[#103EQ0]] GOTO22

AND, OR, XOR

DP

ps if I can find a mathematical approach that eliminates logic/program branching, I do it!

[gogego]

Good deal I appreciate the feedback, it looks like I just grabbed the wrong manuals I will get the FANUC book tom. when I try to finalize this litle program.

Cheers!

[sinha_nsit]

see the attachment for more details about IF_GOTO_ statements.

[CNC Data]

Hello.

I have written a simple Macro B PC Desktop Application to find variables and a Macro B programming manual. Both are available to download free from CNC Data Limited :: CNC Data Monitoring and Collection under the downloads section.

Hope this helps.

[ad64075]

Aparently everyone who commented thus far failed to actually think about what your program is doing. You CAN NOT use conditional statements within a roughing/finishing cycle (G71).

There are numerous other ways to make a variable program work while still using a canned cycle, for example using incremental programming within the cycle. If you do not want a certain move made, the variables corresponding with that feature would equal zerom therefore when the machine read U0. V0. W0. etc., it simply would continue to the next program line without axis movement.

Hopefully I shed a small bit of light onto your problem. I have wrote countless variable programs for Fanuc controlled lathes, for simple to highly complex including 3 axis live-tooling work. It's not impossible. Nothing is. You just need a little shove in the right direction sometimes.