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Not All Values of a J1939 Signal are Displayed in Data/Graphic Window

Last updated: 2019-07-12

Why are some values of a J1939 signal not displayed in Data/Graphic window?


In the Data/Graphic window there is a J1939 Indicator setting available. This setting defines whether the value range of a J1939 signal is considered during measurement. If the J1939 Indicator setting is activated, signal values detected as Not Available are not shown in the signal trace.

You can access the J1939 Indicator setting like shown below in the Data/Graphic window:

By a right mouse click on the signal in the Data/Graphic Window, you can activate or deactivate the J1939 Indicator.

If you miss values for J1939 signals, please check this setting and deactivate it if needed.


Some J1939 signal values are only valid within a defined value range. This is defined in the database by the signal attribute Sigtype (e.g. Sigtype Range). If the attribute Sigtype is used for a J1939 signal in the database, the J1939 Indicator setting in CANoe/CANalyzer controls whether invalid values are shown in the Data/Graphics window or not.


You can find a sample configuration for this functionality in CANoe/CANalyzer, it is called Graphics Window and Data Window (J1939):

Please see desktop Graphic & Data with Error signals and Not available signal in the configuration.

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