My node red clipboard:

serial to mqtt code:

var sensor = msg.payload.split(";");
msg.topic = "MySensors" + "/" + sensor[0] + "/" + sensor[1] + "/" + sensor[2] + "/" + sensor[3] + "/" + sensor[4];
msg.payload = sensor[5];
return msg;

Output MQTT text when the gateway initializing:

object
payload: "0 MCO:BGN:INIT GW,CP=RNNGA---,VER=2.2.0↵"
port: "/dev/ttyS1"
_msgid: "619c024c.85ed8c"
topic: "MySensors/0/255/3/0/9"

other messages same like this

Button node

object
payload: "328523 TSF:MSG:READ,1-1-0,s=4,c=1,t=16,pt=1,l=1,sg=0:0↵"
port: "/dev/ttyS1"
_msgid: "11581f7a.7c16b1"
topic: "MySensors/0/255/3/0/9"

object
payload: "0↵"
port: "/dev/ttyS1"
_msgid: "782972d9.6e0e3c"
topic: "MySensors/1/4/1/0/16"

But gateway receiving nothing
Also serial gateway node not found

What im doing wrong?