Thanks you all for the replies. I had a feeling what I was asking for wouldn't work. Too simple to not be there already.

I feel foolish not realising the '-1' logistics group multiplier.
I like the idea of reading requests from 2nd roboport.

I think I got the colors switched on that 'subtract'.

I believe it should be:

• Subtract 'Each' red from 'Each' green, output 'Each', and connect the output to all your production devices (note that at this point the wire color is agnostic) with enable set to the appropriate '[item] < 0'.

Did a search, didn't find anything. I have a feeling what I want isn't possible, but....


What I want:


Connect a device to logistic network.
Enable device based on content of logistics network (duh), but I wish my enable condition to be
'[signal] < 0' .



How I would like it to work, but ...