I have a controller that send raw data in hexa value, via modbus protocol. PI Interface is able to connect with the controller, but it cannot read the value from the Holding Register address. Basic question, can PI read hexa value at the first place?

Hi (Missing Content)​ ,

It seems to me that yes PI can read values in Hexadecimal format. After all, F and 15 are the same.

Reading values at holding register address, I believe, is possible. For this, you may need to put the function code as 3 in your Location3 tag attribute.

Modbus Interface - Location3 (data type and function code) (aveva.com)

Hi (Missing Content)​ ,

Thank you for the reply. I have tried putting the FC = 3.

However, as my current testing, PI value = 0, while in my Modbus Master Simulator showed hexa value (example: E893, A93E)

Is there any other configuration in PI Modbus Interface that was missed, or we can "read/process" hexa value first before it goes to PI Data Archive?