No, not calibrated anything yet.
I have all 4 AIs enabled configuration is current loop input, as follows:
D0 - 2
D1 - 2
D2 - 2
D3 - 2
P5 - 4
P6 - 5
P7 - 4
P8 - 5
3 analog units configured to send AI status to a remote 232/485 unit.
Strangely, pin A2 seems to correspond to DIO2/AD2, which logically should be A3 as the pins are numbered A1 - A4 and the AIs are numbered AI0 - AI3.
Likewise, Pin A3 corresponds to DIO3/AD3.
Pin A1 and A4 do not correspond to any DIO or AD that I can find.