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2.1.2 On-event addressing (Climatix controllers)
On-event addressing works together with Climatix controllers.
On-event addressing performs several functions that otherwise would have to be
done 'manually':
Workflow
The QBM97.. sensor is wired and connected to the controller via Modbus.
The DIPs 1…8 (addressing DIPs) are set to '0'.
The on-event addressing functionality is configured in the application.
The therefore necessary functional block is available in the CAS library V2.22
and higher, and AHU application V4.0 and higher. The CAS library online help
contains further engineering documentation.
1. Press and hold the push button for 5...10 seconds.
2. As soon the button is released the status LED lights up orange.
The QBM97.. receives temporarily address 246, so that a communication
can be established.
Automatic baud rate recognition is done.
Format changes to 1-8-E-1.
Master writes the Modbus parameters.
Master writes '1' into register 4x0768 ("Bus config command").
3. QBM97.. gets its final Modbus address by the application/HMI. Further settings
are made automatically (see engineering background below).
After a successful pairing the status LED blinks green (normal mode).
● On-event addressing is active for a maximum of 10 minutes.
● Modbus line termination has to be set with the DIP switches. See "DIP
switches (Climatix and other controllers) [➙ 12]".
2.1.3 Baud rate
The default value of the QBM97.. Modbus baudrate is "Auto". That means the
QBM97.. takes over the baud rate of the calling device.
The first connection to the QBM97.. can last up to 30 seconds (to process the
auto baud function).
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