AdamDusan

1. what hardware do you recommend?

That's not easy to answer because I don't know your environmental conditions.

If you don't need 24 VAC, 115 VAC or 230 VAC inputs, I would suggest a LOGO! 12/24 RCE.
This requires a power supply of 12 VDC or 24 VDC. You definitely need 24 VDC, as you also need an analog output module AM2 AQ, which requires a 24 VDC power supply.

The LOGO! 12/24 RCE has 8 digital inputs, 4 of which can be used as analog inputs (0-10V). In order to be able to evaluate a 4-20 mA current signal, you need a 500 Ω precision resistor, which converts the 4-20 mA current signal into a 2-10V voltage signal.
If you don't want to, but would rather read in the current signal directly, then you will also need an analog input module AM2.

Order numbers:
LOGO! 12/24 RCE = 6ED1 052-1MD08-0BA1.
AM2 = 6ED1 055-1MA00-0BA2
AM2 AQ = 6ED1 055-1MM00-0BA2

The LOGO! with the order number is the current LOGO! 8.3.
A new LOGO is coming onto the market, the LOGO! 8.4. It can already be ordered from Siemens, but is not yet available. I ordered one on December 4th, 2023, but Siemens has not yet given me a delivery date.

If you want to wait, then only the last segment of the order number 6ED1 052-1MD08-0BA1 changes, namely 0BA2, 6ED1 052-1MD08-0BA2.

AdamDusan

2. could you explain a little about the settings and the math behind the parameters? In case i need to change the settings.

The LOGO! A/D converter converts any analog input signal into 0-1000 units. With a 4-20 mA/2-10 V signal, only the units from 200 to 1000 are used, i.e. only 800 units. That's why the first analog amplifier B001 converts the 800 units back into 1000 units. The second amplifier B002 then amplifies the 1000 units to 2500 units so that a value from 0.00 to 25.00 can be shown on the display. This is not possible with just one analog amplifier because the signal from the AI has to be amplified by a factor of 3.125. With an analog amplifier you can only enter a gain factor with a maximum of 2 decimal places, not 3 decimal places.

Since you only want to use the range from 10.00 to 15.00 bar as 100% for the analog output, I set the analog threshold trigger with the analog MUX to limit the bottom and top.

If the value is 10.00 bar or less, the analog MUX forwards the value 1000. If the value is 1500 or greater, the analog MUX forwards 1500. The respective value is forwarded between 1000 and 1500.

An analog output requires a value between 0-1000 units in the input.

AdamDusan

3. would it be possible to set the desired pressure easily through display input?

Yes, this is possible.

There are various options for changing the values using the LOGO! display and the cursor keys.

But you can also do it over the network with the integrated web servers.