Read Coil Analogic Output M103

I'm using Unipi Neuron M103 and i can't figured out what Coil can i use for using Analogic Output.
And how can I send what voltage need to be used?

Hello @mohameddounnani,
it is unclear, what type of software you use. Let's assume you use pure Modbus, please correct me if you use Mervis or Evok.You can find complete information about available coils and registers in the Modbus Registers Map of your unit. Unfortunately, no register contains the calculated voltage and you need to calculate the real value in your program. The calculation formula, which you can find in the Neuron Technical Documentation looks like this:
So in order to calculate the values, you need to poll 5 registers:
 Vref (register 1009)
 VrefInt (register 5)
 Vai (Analog Input 1, register 3)
 AI1vdev (AI 1 Voltage Deviation, register 1025)
 AI1voffset (AI 1 Voltage Offset, register 1026)
Regards,
Martin

This formula is for Analog Input it's correct? I need to use analog output's formula

@mohameddounnani Oh sorry, I overlooked it... Anyway, you can find the formula for analog output in the Neuron Technical Documentation I posted above. The system is practically the same, just with different registers and different formula.
Martin