Want to convert digital data from ADC of Mppt to decimal equivalent

[praty 0]

Hello everybody.

I am logging solar voltage ,current data from Maximum Power Tracking Controller to Fx3u PLC through Modbus communication  special extension block Fx3u-485.

But the data is filtered ADC data from Mppt Controller to PLC.

I want to convert this data into decimal number.

For example:- solar voltage showing is 5118(digital data) in respective data register in PLC in which i have stored this is  value , which is equivalent to 27Volt when measured through multimeter.

I want to represent 5118 as 27v in PLC for logging data.

Can anybody help me out in this.

 

[Clear.Mind 18]

You need just write conversation function like FC109 in step7. Look my fb.

[kaare_t 155]

What do you mean by 5118=27VDC? Do you need a scaling function, or a conversion function?

Since you are communicating with the MPPT controller my guess is that you get the correct value from the unit but your misinterpreting it somehow. Please explain a bit more.

[praty 0]

Hey kaare_t

Sorry for late reply.

I'll explain you in more detail.

The data i am getting from MPPT is filterd ADC data of MPPT that is the data is in digital format.

I want this data to be converted into analog format for any user to understand it.

So basically i want to take samples of digital data for 10sec and scale it in anlog format.

For example: 5114 digital data scaled in in 0v to27v fpr user.

So can you please help me in how to take sampling of digital data and scaling.

I am lil bit new can you please help me out

 

[kaare_t 155]

if the values are propotional, Mitsu have a scaling FB for structured ladder:

https://eu3a.mitsubishielectric.com/fa/en/mymitsubishi/download_manager?id=9186