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OPUS Projektor Manual
CAN
Warning: Depending on your sorting option the variable can "disappear" whenever a
modification is confirmed.
More details on this option can be found in variable view .
So the recommendation is to create variables following the first option and use the
variable view to manage and modify existing variables.
5.3.3
J1939 PGN Mappings
This page is a follow-up of the general introduction into J1939 , the general setup required
to use J1939 and the creation of J1939 ECUs and their variables .
Here we create J1939 PGN mappings to communicate with ECUs over CAN bus.
Tutorial video about setting up J1939 transmit mappings
https://www.youtube.com/watch?v=AzjhoZI9y8w
Tutorial video about setting up J1939 receive mappings
https://www.youtube.com/watch?v=GUtjp9NrCDQ
Defining PGNs/Variable Mappings
After having defined an ECU as variable owner and the variable itself we finally have to
define the connection between these two. In other words: We need a definition about how
to exchange the variable's value with the ECU.
These definitions are called "variable mappings" within this tool and for J1939 protocol the
variable mapping defines the PGN.
In order to define a PGN or J1939 variable mapping you can either use the shortcut button
of the variable manager shown in the image above or open the respective dialog from the
menu as follows or, alternatively, click the J1939 mapping shortcut inthe toolbar:
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