Fanuc Robot IO Mapping and Flags?

Hi Guys,

I'm relatively new to Fanuc robots and the whole idea of remappable IO is confusing the living daylights out of me.

We have a welding robot set up running using only the onboard IO. In the program the original integrator has some flags set up but for the life of me I can't find which inputs they are mapped to. I have read that in order to map io to flags you would need to use Rack 34.
But as far as I can tell they haven't mapped anything to that rack. They are only using rack 0 and rack 35. (and rack 90 for the arclink).

Could someone have a look at the attached picture and try and explain how they are doing this?

Quote from tony gast

Flags are useable in the robot programming without any mapping. Mapping them to I/O makes them usable binary in groups. or to talk to the outside world via I/O.(and other things as well) I use flags (unmapped) to give myself Bypass bits that don't consume my physical I/O.... Kind of like auxiliary or virtual placeholder bits in a plc

Could you explain then how I would find the logic that is turning on these flags as seen in the pictures.

For example I know that when DI 2,3,4,5 all need to be on in order for Flag #1 to be on. But nowhere can I find where this logic is being set?

Quote from Robo_Eng_13

Have you checked the Interconnect menu under I/O?

I did breeze through that and any other menu I could find. Nothing really stood out to me though. Do you think I should take a closer look there?

Quote from Robo_Eng_13

I would at least visit and flip to the Flag setup sub-screen if it exists. Interconnect will let you set the value of one output to a logical combination of other inputs. It is the first thing i thought of if i were trying to accomplish what you are experiencing. Without going and looking, i am not even certain that Flags can be used in Interconnect.

That makes sense, but when checking the interconnect setup screen all numbers 1-8 are listed as disabled. So I don't think that it's being done there. I'll attach a screen shot of it just now.

Quote from tony gast

Are there any Background programs running?

As far as I can tell, no. They are using RSR's to call the different jobs and only one will run at a time. I'm not really sure how to check for programs that are running in the background. Is there any easy way to check this?

Quote from HawkME

Have you used the search tool to see where the flags are used? It is on the robot web browser near the bottom of the page.

I managed to find the search tool but I wasn't really sure which category to search. I did try and search the term "f1" in system variable as well as programs with no results.

Here are some screenshots of the interconnect screen as well as one of the RSR programs. You can see they are using the flags there in place of multiple DI's.

Quote from tony gast

Are there any Background programs running?

Mystery solved.
So I did a bit of research and found where to find the background programs (Setup->BG Logic for those wondering) and there were indeed some programs running in the background that were being usesd to switch the flags on and off depending on the DI's status.

Thanks for the help!