ReferenceStripFeeder (3x): No Automatic Changeover when Empty – Error Message Instead of Switching

[Christoph Gabriel]

Hello everyone,

I am running OpenPnP and encountering an issue with the automatic changeover between multiple feeders that contain the same component (part).

My Setup:

• Feeder Type: 3x ReferenceStripFeeder
• Part: All three feeders are configured with the EXACT same Part ID and are listed sequentially in the Feeders list in OpenPnP.
• Goal: When Feeder 1 becomes empty, OpenPnP should automatically use Feeder 2, and then Feeder 3.

The Problem: When the current feeder (e.g., Feeder 1) runs out of parts, I receive an Error Message („feeder empty“) instead of OpenPnP autonomously switching to the next available feeder (Feeder 2).

I currently have to manually abort the job and restart.

My Questions:

1. Is there a specific setting I need to adjust, in addition to having the identical Part ID, to ensure OpenPnP executes the automatic feeder changeover?
2. If the ReferenceStripFeeder throws the End of strip? error: How can I configure it to interpret this state as "empty," causing it to abandon the pick attempt and try the next feeder on the list?

Thank you in advance for any insights or suggestions!

 

[Jorropo]

I have the exact same problem with ReferenceTrayFeeder

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[Mike Menci]

How many nozzles do you have on machine? 

[Jorropo]

2

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[Toby Dickenson]

Hi all,

You need to be using the test branch to have feeders automatically disabled when they have a problem, which is the mechanism that lets openpnp swap to a different one.

Currently you also need to use deferred error reporting mode, which is with this icon visible. This keeps the job running and any errors that can't be fixed by retries get reported at the end of the job.

I agree it makes sense for this to work in "Alert" error reporting mode too, which is with this icon visible on that button, where every error causes the job to be paused and an error message is shown. But the current implementation does not support this. I shall fix this.

Toby

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[Toby Dickenson]

Hi all,

This feature is here:

https://github.com/openpnp/openpnp/pull/1922

[Christoph Gabriel]

Thank you very much!