Factorio Forums

Your logistic robots can get stuck in the delivery process of items from a chest to your own inventory.

Descovered on version 0.16.51 (win64) build 36654.

Prerequisites:
1. Have a chest with 50 coal in it

Steps to reproduce this issue:
1. Request 50 coal
2. Before the robots deliver these goods to you, you pick up the 50 coal from the chest
3. (Also before the robots deliver the goods) You leave the 'delivery'-zone of your roboport.
4. You will now see a yellow warning regarding network capacity is not sufficient.
5. Re-enter the 'delivery'-zone of your roboport

Expected results:
Robots en-route will continue to deliver the goods

Actual results:
Robots stop moving and hover on the same location as where they were when you left the 'delivery'-zone of the roboport.
When their battery is out, they will fly to a roboport to recharge and remain there indefinetly.
You can fix this issue by increasing your "Request" or removing the coal from your inventory.

(I used coal as an example, but it can be reproduced with other matherials aswell).

Please let me know if you need further information

They are not stuck simply because you left the logistic zone, they only get stuck because you have no logistic storage for the bots available to drop their items in, which the game even warns you about, if you have logistic storage available as you need to for the logistic system to work properly they will drop it off and return to the port without problem. NaB.

Or add a storage chest so robots have space to put the coal back and can happily go back to roboport after that.

NO. They are stuck, not because i dont have enough storage chest. How do i know this?

Because i have a 50 empty storage chests besides the damn roboport.

Upload a vanilla save that demonstrates the bots being stuck. (With empty storage chests).

Please enlighten my stupid ass. rather frustrated on this

Your save seems completely normal to me. You have a lot of robots that are charging, but they all have a task that they are going for, meaning that they are not stuck.

yeah you are correct they do have task on hand. but do they suppose to just hover around the robot port for a while?. like on this [https://imgur.com/tatWlef. the robot only wait in circle around the roboport and they have 0 battery. i thought they suppose to drop their items and go another task immediately.


edit: thank you for the swift responses ever.

A roboport can only charge 4 robots at once, so the rest of the robots are waiting for their turn.