In short, yes, that is the standard way to wire speakons, but not all manufactures adhere to it, Ohm for example sometimes wire their subs on pins 2+ & 2-. Some of HK's bi-amped speakers are wired LF on pins 2 and HF on pins 1 (though this is craziness in my opinion).
"Full range" signal is also not necessarily on Pin 1, i.e. in a Bi-amped system of subs and passive mid tops you would probably want your mid tops to be wired "full range" on pins 2, this way you can use 4 core cable to go into the subs then link through to the tops and you don't need adapter cables (wired pins 1 on one end and pins 2 on the other).
Also with NL8s in a 3 way system you wouldn't usually wire it Bass 1, Mid 2, Top 3, you'd usually have Top on pins 4 and then leave either the 2 pins or 3 pins unused. This means if you were to use a different (or 4 way) amp rack you couldn't accidentally connect your HF to a mid channel.