Request different times for polling each sunspec model.

[teampyt]

Request different times for polling each sunspec model.
I think reading static date, like sunspec model 120/121 should be polled at a much lower rate as model 160, which holds dynamic data.
Please generate intervals per model.
eg.
Model 120 = 60 seconds
Model 1 = 10 seconds
Model 160 = 5 seconds
...