Is there detailed steps on how to connect a Micromotion 5700 (modbus) to DeltaV Serial I/O card?
Here are a document that has all the Modbus registers for MicroMotion. Have you look in Book Online (BOL) to map these registers into DeltaV Serial card?
https://emersonexchange365.com/worlds/china_/m/mediagallery/704/download
Hope this is what you are looking for.