Stulz S-Klima C7000 User Manual page 61

The bus error has an adjustable alarm time delay that waits for the bus error to be issued. This can be adjusted sep-
arately for each bus participant.
Address conflict
The address conflict is the second error relating to the bus. An address conflict occurs when several bus participants
have the same bus address.
This means that the bus participants with the same address always send data on the bus at the same time, which
destroys data on the bus.
This results in only limited communication being possible via the bus.
In order to avoid this, the bus participants that receive a data package mute themselves. The data package carries
its own bus address as a sender.
This means that the bus participants eliminate themselves from communicating on the bus by not sending anything.
An address conflict is displayed immediately for unit that have deactivated themselves.
In our example, we have two ATs with bus address 19.
If communication begins on the bus, an AT will be the first to notice that address 19 has been assigned twice and
deactivate itself.
This then means that, after a short period of time, only one bus participant with the bus address is active with the bus
address that was given out more than once.
The user is asked to choose another bus address on the C7000AT which has determined the address conflict. The
placing view below is displayed.
The other AT with bus address 19 runs without impairment.
An address conflict resolves itself once the bus addresses have been assigned correctly.
An address conflict can only ever be shown on the unit that has the address conflict because it immediately eliminates
itself from bus traffic. If this concerns a C7000AT, this is shown on the display. (An address conflict can only be shown
on the unit "ME".) On a C7000IOC, the error LED on the circuit board flashes and the state of the bus configuration
can be queried via the service port.
BA C7000 for EC Tower | EN | 01-2019 | 1000755
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