580EX2 and 420EX compatability 5dmkii sync

Hi. I have a 5d mkii, 580EX2 and a 420EX which I only just received. I can master the 580EX2 on the hotshoe and slave the 420 but when I connect the 580EX2 via a sync cord I cant fire the 420... is this corrector am I doing something wrong?
And what flash do I need in order to achieve this if the 420 will not comply.
Thank yoiu

First, welcome to the forum!
As far as using the 580 off-camera as a master, a Canon-compatible ETTL cord will allow full functionality (including allowing the 580 to function in master mode). If your sync cord is just a trigger-sync, it will not work. You can get a very good ETTL cord from Flash Zebra.

Thank You. I

Aha I was not aware i needed an ettl cord. Perfect. Cheers for the answer. Thats an easy solution

Canon disables the 580EXII's PC port when it is in Master and Manual modes.

A hybrid triggering can be done by connecting a PC-sync cord to an adapter foot. A radio trigger can also be used. The 580EXII is placed on the adapter and set to Master and Manual.

A Speedlite slave can then be set manually. It is fired by Canon Wireless.

But, I think that the 420EX cannot be set manually.

The hybrid triggering does not use ETTL.

CliveyBoy wrote in post #10315483
Canon disables the 580EXII's PC port when it is in Master and Manual modes.

Did you mean Master and Slave?

I think he means what he says. That is what i have been trying to explain to you in the other thread. When the 580ex is in master mode it can also be switched between eTTL and manual modes. Two different options selected in two different menus.

Oh I see. Sorry about that.

dedsen wrote in post #12684878
I think he means what he says. That is what i have been trying to explain to you in the other thread. When the 580ex is in master mode it can also be switched between eTTL and manual modes. Two different options selected in two different menus.

Dale I havent used that function yet on my flash, where would I be able to set it up on my 580exii

Hold down the Zoom button for a few seconds then flashing OFF will appear. Turn the wheel to get to master or slave. Press middle button to accept. Change you modes - ETTL, Manual, Multi as usual.

Thanks will look at that.