Error -301074 DAQ Overload With the ECU Measurement and Calibration Toolkit

Issue Details

Error -301074 occurred at an unidentified location

Possible reason(s):

ECU Measurement and Calibration Toolkit: DAQ overload. The ECU is unable to transmit the DAQ List within the assigned time period. Try reducing the number of measurements in the DAQ List or using a slower Event Channel for the DAQ session.

Solution

As the error message suggests, this is down to the configuration of the DAQ List where there is not enough time in the window to read all the measurements configured. It will be dependent on your specific ECU, but you can try the following steps: 

• Reduce the number of measurements in the DAQ List being used.
• Assign an Event Channel with a slower rate.
• Upgrading to the newest version of ECUMC 25Q2 so that 64 byte per ODT

You can also review how the DAQ Lists have been configured using the mc DAQ List Initialize vi instead of mc DAQ Initialize for greater control on the DAQ List ODT assignments.

These comments are relevant for both the LabVIEW API and C API.