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miniDaqu — Manual 6. Rotax iS
RPM +
10
k
pin 9
pin 5
RPM -
GND
V
Daqu
Figure 15: An example of RPM output connection.
6 Rotax iS
This section gives some specific installation tips for the Rotax iS engines.
Rotax has two iS models, 912 iS and 915 iS. Although the engines are different,
the ECU and connection principles are the same for both engine types.
6.1 ECU CAN Bus Connection
Rotax iS engines are equipped with ECU that has two CAN bus outputs,
referred to them as Display CAN Lane A and Display CAN Lane B. Please
refer to the Rotax Installation Manual documentaiton for more details.
Both lanes are connected to the Daqu Engine ECU connector, see section 2.2.
Lane A comes from Rotax HIC A connector and Lane B comes from Rotax
HIC B connector. Figure 16 illustractes connections. In principle, only two
wires from each lane are connected. Ground is usually not connected.
Please note that Rotax iS ECU data is available only when ECU start switch
is active or engine is running.
6.2 Configuration
Daqu must be correctly configured to read data from the ECU. When con-
figuring Daqu correct Engine model must be selected. Select Rotax 912iS.
Example of configuration dialog is ilustrated on Figure 18.
6.3 Automatic Start Power Switch
This topic is experimental.
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