Need Help!- How to alter #1000 variables

[hydrospin01]

HELP! I have a Kia HMC with a Fanuc 18M model C control, somehow my system variables for the pallet changer got a little mixed up and i need to setore but cannot figure out how. I need to make variable #1000 = 0. I tried typing in #1000=0 in MDI but it wouldnt let me that way. How do you change system variables?

[chucker]

I dont think you can change it with MDI I beleave this variables is most likey wired to a prox switch so the only way to change it would be to make the break the circit that it is tied to this may just mean part of your pallet changer is out of place or it may mean a bad switchI am a little over my head here maybe someone else will jump in and make this a little clearer.

[angelw]

Originally Posted by hydrospin01 HELP! I have a Kia HMC with a Fanuc 18M model C control, somehow my system variables for the pallet changer got a little mixed up and i need to setore but cannot figure out how. I need to make variable #1000 = 0. I tried typing in #1000=0 in MDI but it wouldnt let me that way. How do you change system variables?

A 16–bit signal can be sent from the PMC to a custom macro.
Variables #1000 to #1015 are used to read a signal bit by bit. Accordingly, you can query the state of #1000 from you program in the following way:
#1=#1000, then have the program react accordingly. Therefore, #1000 is not being set by the PMC, and could very well be a proximity switch fault as suggested by chucker.

Regards,

Bill

[sinha_nsit]

That is right.
#1000 etc are read-only variables inside a program. These can only be changed through physical input switches.
If you want to see the effect of #1000, temporalily replace #1000 by 0 inside the program.

[hrh]

All sound and good explanations.

These signals are assigned in the PMC (programmable machine controller) which is FANUC's term for PLC.

The variables are activated by input signals (switches, proxies etc) and are described as "interface input signals". This is then used to interface machine signals with the user or machine tool change or pallet change programs. (Used these signals as well to calculate component count of the remaining bar in the chuck draw-bar when using a turret puller instead of a bar-feeder.)
The PMC uses two bytes G054 and G055 to which variable #1000-#1015 are assigned.

The "newer" PMC of the FS-18MC should allow you to [B][U]force the input signal (Xyyy.z) for G054 bit 0 (#1000) or the output if you use the PMC Diagnostic Status display screen