# 8. IoT Data Communication
# 8.1 MQTT
# 8.1.1 Server Settings
MQTT server configuration
You can config the client and the broker in this page.
# 8.1.2 MQTT Topic Settings
This page publishes the topic in the format of Device Name/Global Variable Table Name/Variable Name, which you can set by selecting Publish or not. If Yes is selected, external users can subscribe to variables based on addresses and topics.