<MqttMessageType> Topic levels exist for each MessageType defined in 7.2.2. Additional information about each Topic level is provided in Table 178.
Table 178 – MQTT Topic level MessageType mapping
|
MessageType |
MqttMessageType |
RETAIN |
Required |
Specification Reference |
|
DataSetMessage |
data |
False |
Yes |
Defined in 7.3.5.7.3. A system specific Topic may be used instead The RETAIN false is the default setting. |
|
DataSetMetaData |
metadata |
True |
Yes |
Defined in 7.3.5.7.4. A system specific Topic may be used instead. |
|
ApplicationDescription |
application |
True |
No |
Defined in 7.3.5.7.5. |
|
ServerEndpoints |
endpoints |
True |
No |
Defined in 7.3.5.7.6. |
|
Status |
status |
True |
Yes |
Defined in 7.3.5.7.7. |
|
PubSubConnection |
connection |
True |
Yes |
Defined in 7.3.5.7.8. |