modbus

Is there a correct memory map for CVM-C10 power analyzer? I use modbus rtu using documentation from circutor memory map

Im working on a project using circutor power analyzer modbus rtu and raspberry pi and nodered. but some values of registers are not correct specifically the L1 to L2 V..is there a computations needed comparing to the displayed value?

I tried nodered modbus flex getter reading register. sample

fc : 3
unitId : 1
address : 62
quantity : 2

but the value is different from display

Solution

  • So I found this link https://flows.nodered.org/flow/4431eb891615ded1b3b4a980ad5f2ee0

    you have to combine the 2 registers like in javascript

    let line_voltage_1 =  data[62] << 16) | data[63];