Factorio Forums

TL;DR
make roboport have trash slot to pump out logistic bots.
What?
Logistic botstuck in frontline roboport.
Why?
I put buffer chest into frontline to better supply construction, but logistic bot will stuck in these roboport and never leave because there are no logistic request nearby.
And by stucking in these roboport, they also make construction bot cannot be near the frontline, massively increased reacting time.

There's already a mechanic for this. Open the roboport GUI and enter a request of for example 10 construction bots in the "robot requests" section. The roboport will make sure there's a slot free for these 10 bot requests, so if all slots are full it will send away surplus logistics robots.

Additionally, request bots in that GUI in more far away roboports to distribute all your bots along the defensive line.