It would be amazing if the oil rig internal capacity could be read through the circuit network. I've looked into it myself a little bit, and I don't think it's possible to do direcly, as it's basically a pumpjack that the wire connects to. The best other option I can think of, is to do like LTN does, and place a constant combinator to which the wires can connect, and then update that combinator via script.
It would be amazing if the oil rig internal capacity could be read through the circuit network. I've looked into it myself a little bit, and I don't think it's possible to do direcly, as it's basically a pumpjack that the wire connects to. The best other option I can think of, is to do like LTN does, and place a constant combinator to which the wires can connect, and then update that combinator via script.