The Modbus “standard” can be a somewhat non-standard sometimes (you’ll see various: interpretations of the standard, options and their names, word-order/Endianness, etc). Also, not all Modbus device manuals are as detailed or helpful as one might like.
So… to help you connect any Modbus devices you’d like to monitor/control with groov, we’ve compiled a list of popular Modbus devices and their corresponding settings in groov…
especially what we call the Access Config. settings (defaults pictured here):