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Problems in Displaying some J1939 Signals in Data/Graphic Window

Last updated: 2017-02-16
Why are some J1939 Signals not displayed in Data/Graphic Window?

J1939 precisely define how signals shall be interpreted. For CANoe/CANalyzer the interpretation of each signal is defined using the Signal Attribute SigType.

SigType shall be from type Enumeration and the order of the enumeration values must not be changed. Please consult CANoe/CANalyzer Online Help for more details on SigType:


To change the SigType definition please proceed like following:

  • If your dbc has not been correctly defined, then you might not see the concerned signals in Graphic/Data Window because its interpretation is not correct. In this case, please either correct the attribute definition like indicated above or deactivate the J1939 signal interpretation using the setting of J1939 Indicator like indicated below.
  • For J1939 signal values are only valid within a defined value range. Particular values are reserved to identify an invalid or not available signal and are not automatically displayed by CANoe/CANalyzer. In case you also want these particular values to be displayed, adjust the setting of J1939 Indicator like indicated below:

By a right mouse click in the Graphic or Data Window, you can activate or deactivate the J1939 Indicator. Depending on the version of CANoe/CANalyzer you have to use either one or the other method:


You can find a demonstration of this functionality within the desktop Graphic & Data with Error signals and Not available signal of the sample configuration contained in the following folder of your CANoe installation:
…CANoe Sample ConfigurationsJ1939MoreExamplesGraphicAndData

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