I am working on a project in which I have to read the flow of water line using electromagnetic flow meter. I just want to read 4-20 ma signal from transmitter using Hart protocol through Arduino or ESP32.
As in hart protocol, our field device is a slave and my system is master and slave device will only send data when demanded by master so, i am facing some problems while connection this master slave system as I am new with hart protocol.
Kindly guide me thanks
khalilyousaf:
I am working on a project in which I have to read the flow of water line using electromagnetic flow meter. I just want to read 4-20 ma signal from transmitter using Hart protocol through Arduino or ESP32.As in hart protocol, our field device is a slave and my system is master and slave device will only send data when demanded by master so, i am facing some problems while connection this master slave system as I am new with hart protocol.
Kindly guide me thanks
I am confused!
The first paragraph you want to read the data from a 4-20 ma signal.
The second paragraph you want to control the 4-20ma signal to send data.
The last sentence you have trouble with the protocol.
But you never mention that you have the electronics all done and working.
Paul