thanks for your really fast answer.
I’ve read the client library Python code at this link.
virtualWrite() function is defined like that:
def virtualWrite(self, channel, value, dataType="", dataUnit=""):
topic = self.getDataTopic(channel)
payload = “%s,%s=%s” % (dataType, dataUnit, value)
payload = value
So if I’m not wrong “raw” payload (i.e. the one which I can send with MQTT.fx or via a Nodered function) can have two formats:
If it’s correct, according with the table you have specified in your answer if payload is formatted like
it will display the value of the channel and the possibility to choose the widget between gauge, value, graph. But it isn’t like I’ve expected
I’ve done the test with hertz value, sending freq,hz=50 and it works.
I think I’m doing something wrong, but I don’t know what