Hi,

these "bits" show the resolution (accuracy). The analogue value is always stored in a 16-bit word.

Example

• Measuring range of the analog module: 0 to 10 V
• With a resolution of 8 bits, a total of 256 values can be displayed, which is 39 mV or 0.4% referred to the end value of the scale (in the overflow range).
• With a resolution of 14 bits, a total of 16384 values can be displayed, which is 0.72 mV or 0.007% referred to the end value of the scale (in the overflow range).

Regards,

Towome

Hi,

no, the PIW range is the same but the values between 0 and 27648 inc have a higher accuracy.

This is what I wanted to tell you in my last post...

Also check this FAQ for understanding:

For an S7-1200/S7-1500 controller in STEP 7 (TIA Portal), how do you scale integer values in real numbers and vice versa for analog inputs and outputs?

Regards,

Towome