I cant find any information online about what Expression pedal to use on a Yamaha CS-60 when you dont have the original pedal. To connect to the Foot Controller jack on the synth.
On the original pedal I can see on pictures that it is a TRS jack on the cable, but is it the same standard on a new Expression pedal with TRS?
No, a modern expression pedal will not work, and could damage the CS60. You need the specific pedal that Yamaha made, which works with the CS60 and CS80. It is an optical pedal, and you can see several photos of it here:
Yamaha CS80 photo gallery - Syntaur
As far as I know, there is no substitute pedal that will work.
Thank you for your answer.
I will look out for one in the ads then, and hope for the best.