Can you have AS-i and 24V in the same cable?

TRENT_TECH:
Are you talking about 200 meter 4-conductor or just 2? I have installed 250m-segment with 2-conductor (with ext. plug and 18 nodes), it works fine. There are one or two retries sometimes (maybe when a FRO is running, don´t know), but thats just normal according to the analyzer-manual. But the question was about 4-conductor 200 meters...
I dont know if you should use shilded cable or not, but since the yellow AS-i cables are non shielded i guess you dont need it... I asked Siemens about this 4-conductor and the answer I got was that the people in German is testing 4-conductors to see how it works. Don´t know what he meant by that...