Fanuc - NC code to read a parameter status??

[fxken]

Controllers: Fanuc 18iMB.
I have a lot of programs that I would like to be able to run on 2 similar but not identical machines. Rather than writing 2 programs, is it possible to maybe set a parameter on machine A to "1" & machine B to "0" then have the code read the parameter status? If so, what parameter number? and how do I call it in a program?

example of logic would be.

If parameter *** = 1 goto block N100
If parameter *** = 0 goto block N120

I hope this makes sense to someone.
Any suggestions would be greatly appreciated.
Thank you.
Kenn.

[fordav11]

G10 allows you to write parameters but I don't think there's any 'code' to read them.
'checking the machine' type questions have come up a few times in the past. one solution is if the machines have macro you can pre-set a variable to a unique number for each machine then read that variable at the top of the program.

[fxken]

Hi Fordav11,

I have never used macro, & I don't have a lot of programming experience. If it's available I will try to use it.
Does that mean that the preset variable is stored permanently in the controller?
Thank you
Ken

[fordav11]

yes its permanent if you use the variable #'s that don't clear when the machine is powered off.
to check the variable using variable #500....

IF #500 =0 GOTO N100
IF #500 =1 GOTO N120

you can check for the existence of macro.
in MDI type #100 = 1 EOB then press INSERT then start. if you don't get an alarm then you have Macro B.

[fxken]

Thanks a lot Fordav11.
Really appreciate your help. I will check it out.
Ken

[fordav11]

also check for macro A just in case....
in MDI ....
G65 H01 P#500 Q1 EOB then press INSERT then start

[fxken]

Just checked
#100=1 EOB. no alarm. Looks like I got macro B. I will check for macro A later. Looks like I've got some work to do.
Thanks again for your help.
Ken

[fordav11]

and cycle start too?
you can find the macro variable list on the offset page then page right until it comes up.
#100 should be 1 if it worked.