Interfacing EVAL-AD5700 with Microcontroller & Transmitter

Hi,

I am trying to interface the EVAL-AD5700 with STM or Arduino Microcontroller and also Yokogawa Transmitter. Has anyone ever tried this configuration or has experience using the HART modem.

and the current setup is as follow

mp2100 9 months ago

Interesting.. I hadm’t seen this EVAL board.. I will have to read up on it.

I’m wondering why the terminals say HART in and HART out. HART is a 1200 bps serial comm imposed on the 4-20 mA signal. It’s not in and out.

Allen
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meera_hussien 5 months ago in reply to mp2100

Thanks mp2100 . And sorry for my late response. I have asked for help from the official analog devices forum. So far no answer yet.
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fonhuaicho 25 days ago

Nice setup

People have interfaced the AD5700 with STM/Arduino over SPI without much issue. Just make sure the HART signal is properly coupled onto the 4-20 mA loop using the correct resistor and capacitor network.

The “HART in/out” labeling can be confusing, it’s basically the same loop signal.
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meera_hussien 18 days ago in reply to fonhuaicho

Thanks for the update fonhuaicho . I will relook into this and see if i can get this working. I would also like to inform that I have tried to look for some reference on the wiring or the setup but didn't find any. If you know any site or resources that is related to my setup, please do share it.

Appreciate your help.

Thank you.
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