Hello *To function node Please tell me how to read 485 serial data*

[ShinDongHen]

hello

id 3 as function node
hex 03 03 00 01 00 10 I will attach a photo of the manual.

Function JavaScript is
msg.payload = {
'fc': 3,
'unitid': 3;
'address': 0x0001,
'quantity': 0x0010,
};
return msg;

What I want to do is check the status of 16 relays.
It doesn't work... Please give me some advice.

function node.json (2.7 KB)