【提问】：Mqtt <-> RS485 is not working properly
【详情】：Hi I have trouble to use HF2411. 1. Eventhough HF2411 received data from Serial Port(RS485, RS232..), HF2411 never transfer to SOCK ( MQTT). - Set up mqtt configure via IOTService app. 2. I made HIS script and upload it to HF244. but SEND() operation was not working. RESET is working fine. TIMER heartbit 30000 SEND(UART,uart0,"uart test") RESET END

【回答】：Download the instructions for MQTT through transmission from our official website 2411 script function, write in this format SEND(UART,uart,"uart test")

【提问】：Could you share the URL link to download MQTT instruction???