Getting Started with MQTT on your Flexy using BASIC

This thread has been marked as solved. If you have a similar issue, it would be better to post your own thread rather than bump this one, to help keep everybody's different issues separate.

Are you sure the TCP port 1883 (MQTT) or 8883 (MQTT over TLS) is opened on your network ?

Yes, I have used MQTT before in my system on same ports.

Hi Simon,

When I use this code with the Ewon MQTT broker to publish messages to /topic/flexy/serialnumber/command   I get the following errors:

• For the message: hi
  Dim index error(19) 113: TagNameToWrite$ = JsonPart$(Pos1stQuote% TO Pos2stQuote%-1)

• For a larger message: { "month" :6 , "day": 7}
  Not a variable(4) 124: SETSYS Tag, "load", TagNameToWrite$Not a variable(4) 133: SETIO TagNameToWrite$, VAL TagValueToWrite$

Hi,

This is normal.

The message format the Ewon is expecting is { "month" :6 , "day": 7} where month and day must be the TAG name where to put the values.

I guess you did not create the Tags.

This thread has been marked as solved. If you have a similar issue, it would be better to post your own thread rather than bump this one, to help keep everybody's different issues separate.

Hi,

This is normal.

The message format the Ewon is expecting is { "month" :6 , "day": 7} where month and day must be the TAG name where to put the values.

I guess you did not create the Tags.

Thank you Simon.

You are correct I did not create the tags, could you please point me towards a thread that explains how to do that?

Hi,

I suggest you follow the videos on https://elearning.hms-networks.com/