I'm a keyboard player.
I'm not too familiar with the FP7, other than that it's an 88 key digital stage piano.
I'd start with anything that's named "Poly synth", "Sawtooth Synth", etc. if there are any synth patches at all on that keyboard. Then try to use some effects like Chorus, Phase, Flange to fatten it up.
That's pretty much it. I don't think you can do it all with effects because the actual synth pad Eddie uses is on an analog Oberheim OB8 synth and the root of the sound is the buzzy sawtooth waveform without any effects.
So unless your POD or his keyboard has a synth engine to create sounds (as opposed to effects) you'll have to take the closest synth pad his FP7 has and maybe add some effects like Chours, Phase or Flange to try and fake it.
I don't know if this was helpful, but knowing from 15 years of keyboard\synth experience, analog synths are some of the hardest sounds to replicate without having a sample of the waveforms that create them.
Now if he had a different keyboard like a Fantom or Motif, you could get it pretty easy and accurately as they have a plethora of sampled waveforms to start from.
I have a Roland Fantom X6 and whipped up a pretty convincing OB8 (Jump sound). But again, I started with 2 sawtooth waveforms and built it up from there.
The more I read my own post the less I think it's helpful to you. Sorry.
