question

Enrique Elizaga avatar image
1 Like"
Enrique Elizaga asked Felix Möhlmann answered

Why deadlock?

Hi, why are the AGVs stuck in a jam if control point 1 does not take to control point 2?

Yet on the gridlock report it says so.

1655329586363.png

I have specified next work points for "1" to avoid it trying to forward an AGV to "2" to no avail.

FlexSim 22.1.2
agvgridlock
1655329586363.png (107.3 KiB)
5 |100000

Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

1 Answer

Felix Möhlmann avatar image
0 Likes"
Felix Möhlmann answered

It's hard to diagnose from just a screenshot. It is also not apparent which traveler in moving to which control point.

Are you sure that those are the control points that cause the deadlock or might there be duplicate names in the model?

It might also help to activate the debug option in the network properties to show the current and pending control point allocations of the travelers.

1655359414725.png


1655359414725.png (24.5 KiB)
· 8
5 |100000

Up to 12 attachments (including images) can be used with a maximum of 23.8 MiB each and 47.7 MiB total.

Enrique Elizaga avatar image Enrique Elizaga commented ·

@Felix Möhlmann thank you. Checked the names, no duplicates. With the debug option, it shows this odd situation again (the problem is CAGV6):

1655383298334.png


0 Likes 0 ·
1655383298334.png (95.3 KiB)
Felix Möhlmann avatar image Felix Möhlmann Enrique Elizaga commented ·
Looks like there is some path from control point 1 to control point 2 (from your original screenshot that shouldn't be there). Otherwise I don't see why CAGV6 is trying to allocate it.

Next thing I would do is have a task executer start the model at control point and just have them travel to the second one. Based on the route it takes you might be able to figure out where the issue lies.

0 Likes 0 ·
Enrique Elizaga avatar image Enrique Elizaga Felix Möhlmann commented ·

I have created a controlled area for that specific problematic zone (highlighted in yellow):

1655393424552.png

It is configured with max 2 allocations, yet it is allowing 3 as you can see...

1655393869037.png


0 Likes 0 ·
1655393424552.png (202.7 KiB)
1655393869037.png (18.6 KiB)
Show more comments