On the Analog and Digital tab, you can define the topic configuration. Settings for unit, gain, offset and data type refer only to the Analog tab.

Name

You can enter a signal name and additionally two comments, when clicking on the symbol .

Unit

You can enter a physical unit.

Gain / Offset

The settings in the columns Gain and Offset are useful to scale normalized values to physical values.

Topic

The column Topic contains the data path on the broker. If a base topic path is set in the configuration, all topics configured here are found inside that path. A path for the topic is then used as a sub path under the base path.

Note: Do not use a leading forward slash “/” in a topic, because this would add an empty path entry to the topic. Two separators next to each other (“//”) are also not allowed.

When you click on a cell in the Topic column, the <...> button appears. Click this button to open the topic browser. In the topic browser, you can select topics and add them to the signal table. See also Selecting topics via the topic browser.

Offset in Message

The Offset in Message defines the byte offset inside the received message, to skip a fixed number of bytes or characters before decoding the desired value.

Data Type

The Data Type sets how the value is stored in ibaPDA. Direct text to value conversion is supported directly in the MQTT module, using the configured decimal point character for interpreting float values.

Active

Enable/disable the signal for acquisition in ibaPDA.