as you can see in the photo, I have a modbus that reads the data every 5 seconds, and a timestamp to inject other data, At the end I have a "Join" to format this data in order to send them by SMS.
The problem I have is that whenever the modbus reads the data the join sends the sms, I want the reverse... let modbus read the data and every time I click on timestamp the message has to be sent.
I want to replace the timestamp with an insms so that every time I receive a message, the nodes respond with another message
I tried to use rate limit but i couldn't.
any idea Please !!