When applying 4.7mA and 17.3mA measured and verified with several multitesters, I obtain 6460 and 24010, respectively.

I am reading at the tag "ai1000" with the Monitoring On/Off menu icon tool, configured as Int, Current, 0-20mA, Disabled Power Supply Diagnostics, Disabled Overflow Diagnostics, Disabled Underflow Diagnostics, Strong (32 cycles).

How these reading should be interpreted, if 2^12=4096, 2^13=8192, and having a 1400 [b/mA] approx. factor (?) for the acquisition? Shouldn't be 4096 or 8192 for 20mA? I would be having close to 28000 for 20mA.

The configuration is the 2-wire, with one Power Source, one Load with 2 wires, and the ground cables interconnected, exactly wired as shown in the picture.

As per S7-1200 System Manual see the attached table for scaling of values.