what about having an account on a console and one on pc?

[(PSN)RaulBataka]

as far as i know, you are not allowed to have 2 accounts on the same plataform. but what about having an account, say on ps4 and one on pc? will that gets you banned? is that something you shouldn't do?

[(PSN)SeekerLoki]

I can assure you having accounts on different platforms won't cause any problems.  A great many tenno play on more than one platform.  I myself have had a PS4 account for almost 3 years and a PC account for 2.5 years.

[MagPrime]

I've seen Forum members admit to having one on two platforms as well as know a couple personally - no issues have ever been mentioned.

Honestly, I don't see how it could be a violation.  You aren't using the second account to pad event numbers or trading between the accounts; you can't.