Grundfos modbus profile

[Mihaela D]

Hi
Start from using RTU Read test. Select holding registers, slave id and address.  You may need to subtract -1 from register address so try both ways. If this works then let me know and will make example of profile.
BR

Hello,

Sorry for replying so late, the pumps are in a remote location and I have lost contact with them.
I have attached a screenshot with the correct reading settings for pump pressure (register 301 in documentation). You were right, I needed to subtract 1.