Modbus Data correctly read out

[Becker]

Hi,
I want to read out some Data from my Inverters (SMA) over modbus tcp, it works but I get a "0" in front of the value:

0, 2695
I only need the second value: 2695 (W).

In a windows app is the same:

+0: 0
+1: the value I need. (in this picture the frequency)

How can I get the second value only ?

greetings

[UnborN]

Hi Becker,

what if you try reading from Address 30776 and Quantity 1

but i guess your result will still be in an array that you can access with msg.payload[0]

[Becker]

Quantity1 will be error, no data
I´ve no idea what Quantity means

[UnborN]

Quantity means how many addresses to read starting from 30775 .. that why you get an array with two elements.

What is the error and what node produces that error ? .. put a debug node after your modbus tcp node with the above configuration.

[Becker]

just disconnect:

the other inverter crashed when I queried more than 4 data.
How can I query the registers one after the other so that the Invert does not crash ?

[Becker]

this is the solution,

function with:

var temp = (msg.payload[1])
msg.payload = temp;
return msg;

to easy.