ICP DAS USA UA-5000 series User Manual page 57

2. Configure the variable, topic and related parameters in the MQTT task item.
Settings:
Function items
Variable Name
Data Type
Attribute
Subscribe Topic
Subscribe Qos
Publish Topic
Publish Qos
Choose a variable in the pre-defined variable table.
Not editable. It will show the data type of a variable.
Not editable. It will show the variable attribute.
The topic of receiving data or subscribing messages.
The Quality of Service (Qos) levels.
0: Delivering a message at most once.
1: Delivering a message at least once.
2: Delivering a message at exactly once.
The topic of sending data or publishing messages.
The Quality of Service (Qos) levels.
0: Delivering a message at most once.
1: Delivering a message at least once.
2: Delivering a message at exactly once.
UA-5000 Series User Manual V.1.0.0
Description
57
ICP DAS
Default
System value
System value
2
2