April 25, 2019, 02:15:21 AM
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 Fanuc robot multitasking

Author Topic:  Fanuc robot multitasking  (Read 1098 times)

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March 21, 2019, 03:31:22 AM
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Arvi


Hi
how do do multitasking on fanuc rj-3 controller. I have hooked up a 7th axis which i want to run continuous while the robot is doing other stuffs? I have multiple program option installed.
Can anyone help please.

Today at 02:15:21 AM
Reply #1

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March 23, 2019, 01:38:43 PM
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robotero


When you create a program you define which motion groups are used.
If you have multitasking option you can create separate programs for each group and run them independently.



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March 24, 2019, 11:50:14 PM
Reply #2
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Arvi


Thanks for your reply. Is motion group an option that we have to install? I created a program and tried to define that under group mask as group 2 which i believe would look like 1,1,*,*,*,* this, which i cannot do. the cursor does not even move on the second * so that i can change it to 1. Am i missing something?
thank you

March 24, 2019, 11:57:42 PM
Reply #3
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robotero


Hi, sorry, yes I mean the group mask
That defines which groups are moved in the program, but once created it can not be modified.
You can run simultaneously one or more programs if you have multitasking
option as long as they move separate groups
If you try to run a program that uses a motion group that is already being used by another task it will cause an error/alarm



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March 25, 2019, 12:30:22 AM
Reply #4
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HawkME


What is the 7th axis for?

For multitasking it needs to be set up as a separate motion group. I'm not as familiar with rj3 but on the newer robots this is done in a controlled start under the maintenance menu.

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March 25, 2019, 07:19:43 PM
Reply #5
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Arvi


7th axis will be used for continuous rotation on of our projects. Slowly setting up. I can go to the controlled start but cannot see much option on how to set another motion group. i will have another good look. Hawkme, how do you set it on your controller, just a rough idea so i can look for the similar menus.
Thanks

March 25, 2019, 08:52:32 PM
Reply #6
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HawkME


So do you need positional control or just speed control. Did you work with Fanuc to get the proper software options to do this? For continous rotation I believe you either need to purchase the "Continous Turn" option or "Process Axis" option.

Today at 02:15:21 AM
Reply #7

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March 25, 2019, 09:20:34 PM
Reply #7
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Arvi


Basically I need to run the 7th axis continuous for 30min while the robot is doing other handling jobs. The Continuous Turn option is already installed and i have already programmed that axis for continuous turn. Just cant figure out to set up another motion group so that i can achieve multitasking.
Thanks

March 26, 2019, 11:44:41 AM
Reply #8
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tony gast


If you create a job and put moves in it, you cannot change the group mask. you need to set the mask at job creation.
Oh, well

March 26, 2019, 12:53:42 PM
Reply #9
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HawkME


You need to boot the robot into a controlled start. Then press maintenance and you should see group 1 as your robot. The auxiliary axis must be configured under group 2 axis 1. If it is Group 1 axis 7 then you will not be able to multitask. You must have the multi-group motion option installed J601.

March 26, 2019, 07:12:38 PM
Reply #10
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Arvi


Thanks. Oh ok at the moment it is configured as Group 1 axis 7. I will need to check if the option is installed. If the multi group motion option is installed, I should be able to see the options for Group 2 right and I should be able to configure that under Group 2?

March 26, 2019, 07:57:04 PM
Reply #11
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Arvi


I have checked under option, Multi-Group Motion is installed. I cannot see any option for Group 2 under Maintenance though. Am i missing anything here?? I have attached few pictures please have a look.
Thanks

March 26, 2019, 09:11:35 PM
Reply #12
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HawkME


Make sure you take an image back up before changing these settings.

If you highlight extended axis control, then press Manual you should be able to select group one and display the parameters then delete the extended axis from group 1. First make sure you know all of the parameters and have them written down. Then you will need to see if you can re-assign it as group 2.
« Last Edit: March 26, 2019, 09:13:11 PM by HawkME »

March 26, 2019, 09:19:32 PM
Reply #13
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Arvi


Ok I will try that.
Thanks

Today at 02:15:21 AM
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March 27, 2019, 04:25:55 AM
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robotero


Guau! Your robot is loaded with many cool options You have multitasking and multi motion groups, but the 7 axis was configured as an extended axis
So basically it belongs to group 1
If I remember correctly you need to configure it as an auxiliary axis instead
to create it’s own group


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March 27, 2019, 07:50:42 PM
Reply #15
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Arvi


Yes thanks. According to Hawkme, I have deleted the extended axis under group 1. Now I am trying to re-configure it under group 2 but i cannot see any option for Group 2 under ''SELECT GROUP''??. Please see the attached pictures.
Thanks

March 28, 2019, 12:52:53 PM
Reply #16
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HawkME


It looks like you will need to add group 2 in the software install menu, in a controlled start. I believe you will need the original software media to do this. Do you have that?

March 28, 2019, 07:09:34 PM
Reply #17
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Arvi


I will need to ask my manager about the software. Can you just give a brief explanation on how to add group 2 on the controlled start please. If I could find the software , I can try and add it.
Thanks

April 01, 2019, 07:10:24 PM
Reply #18
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Arvi


Hi we dont have the original software, is there any other option?

April 01, 2019, 08:26:05 PM
Reply #19
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HawkME


I don't think it will let you proceed without having the memory card with the load software. You will need to work with Fanuc and it will probably not be free.

Another option is to use a non-Fanuc servo motor and have the robot turn on a digital output when you need the motor to run. You haven't said what the application is for so I can't say what your best option is.

April 01, 2019, 08:36:10 PM
Reply #20
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Arvi


The application is for rotomold. That(induction motor) is what we are using at the moment but a servo motor would give us better control option as in braking control, position control etc. At the moment it is based on timing.

Today at 02:15:21 AM
Reply #21

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April 15, 2019, 09:25:07 PM
Reply #21
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Arvi


Hi
I figured out how to add Group 2 on the controlled start under robot library. But it does not allow me to add the extended axis under Group 2. It Gives me "Invalid Subscript" error. Can anyone guide please.
Thanks

April 15, 2019, 11:02:31 PM
Reply #22
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robotero


I assume you attempted a S/W install under controlled start
Check what other options are installed in your system

The system will only allowed you to install the libraries according to your installed options
For example you can add basic positioner if you have that option

The basic positioner will be added as group 2
Then you configured the axis as a basic positioner

I think this is the path to reconfigured the 7th axis as a separate group

Could you please post what option you have

April 17, 2019, 04:16:38 AM
Reply #23
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Arvi


Hi Robotero
I had the Positioner option installed and figured out how to assign the external axis(7th axis) under group 2. Achieved what i was trying to.
Big thanks to everyone who has supported me with all their experience and knowledge.
thanks again.




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