Hi,
Yes, If I want to use 16 anlog input or output, is that possible?

I couldn't find any example like this.
I see. Unfortunately, it's not possible to use 16 analong inputs nor 16 analog outputs. A workaround at current moment is: connect two GAINER I/O modules to a PC.

I'm sorry for trouble you, but could you please let me know why/how do you need such inputs/outputs? In some cases, I'll be able to show you alternative way. For example, if you want to control 16 LEDs, configuration 7 (8x8 matrix LED control mode) will be a solution for you.
Cheers,
Shigeru