1-Wire DS2480B overvoltage and ESD protection
Something vital to remember when powering current-hungry devices on the bus cable, is that ground lift quickly becomes a problem, i.e. the DQ-GND voltage diff decreases since GND is lifted by the 24V loads.

If using a CAT5 cable, this can be mitigated by using multiple wires for GND.
But with several 100's of mA in the return wire, I'm not sure that will be enough.

A local example: lighting up a 20mA LED with a DS2408 at the far end of my ~80m home network was enough to render the whole net unusable, power cycling it was the only way to get it back. When using three GND leads instead of one (in the CAT5), it works like a charm. Not sure about the rest of the load on the net, but it's some 20+ DS18B20 and a few DS2406's, nothing fancy.

(Sorry, don't have enough reputation to comment, so using Answer even if it is not an Answer...)