Script Development / Connector Object DFF.CONN / MQTT Broker (v5.0)
The MQTT Connector operation object mainly provides methods for operating on MQTT.
This Connector connects based on the MQTT v5.0 protocol
DFF.CONN(...) parameters are as follows:
| Parameter | Type | Required / Default | Description |
|---|---|---|---|
connector_id |
str | Required | Connector ID |
Message Subscription
For message subscription in the Connector, please refer to Script Development / Connector Subscription
.publish(...)
Publish a message. Parameters are as follows:
| Parameter | Type | Required / Default | Description |
|---|---|---|---|
topic |
str | Required | Topic |
message |
str/bytes/bytearray/int/float | Required | Message content |
qos |
int | 0 |
QoS level |
retain |
bool | False |
Whether to set the message as the Broker's retained message |
| Example | |
|---|---|
1 | |
The Connector attempts to publish up to three times, returns None on success, and raises an exception if it continues to fail.