Depends on what you want from the pedal board...
If you want time effects maybe. Still you can try to "simulate" a serial loop with the full mix control from the back and pass almost all of the sound to the RP.
Another reason for not working would be impedance mismatch and level mismatch. And digitech does not have info on the f-30.
Also if you play live and you want to use delay in very high volumes the EL84 power section of the f-30 may make matters worse because it will add distortion and woulb be kind of putting ...delay before distortion!
The only way to see if it works is to try and this is not easy if you don't have the unit.
You could disengage the f-30 preamp (by plugging a patch cable in the send jack on the back) and use the RP as a preamp. Which is ok and you will have multiple sounds. This way you re not getting the f-30 sound
The rp1000 has a "my amp" loop to reengage your amps preamp but the loop is parallel and I don't know if it will work.
A really cool guy here said that the parallel loop of the f-series works pretty much close to full mix in high volumes (enough to use post eq for example). Maybe try some pedals instead of the RP?
Do you want its distortion?