Hi All,

I implemented J1939 manager to my project and send/receive J1939 messages via this manager. But when I want to read DM1 message which is multipackage (more than 8 byte), I can not add thsi message to the P2P RX Signals section. Is there a way to read DM1 message via this J1939 manager?

https://content.helpme-codesys.com/en/CODESYS%20CANbus/_can_f_j1939_diagnosis_application.html

you need this :
VAR
J1939_ECU:j1939.J1939RemoteECUDiag;
DM1_ :j1939.DM1_Read;
DTCliste : J1939.idtchandlerList;
DTCWriter : j1939.DTCBufferWriter;
arDTC:ARRAY[0..MaxDTC]OF j1939.DTC;
END_VAR
VAR CONSTANT
MaxDTC:UDINT :=100;
END_VAR
DM1_(
xEnable:=TRUE,
xDone=> ,
xBusy=> ,
xError=> ,
itfSourceECU:= J1939_ECU, //My CAN J1939 ECU
itfDTCHandlerList=> DTCListe ,
udiDTCCount=> ,
MalfunctionIndicatorLamp=> ,
RedStopLamp=> ,
AmberWarningLamp=> ,
ProtectLamp=> ,
xReceived=> ,
eError=>
);

DTCWriter(
xEnable:= TRUE,
itfDTCHandlerList:=DM1_,
eError=> ,
pDTCBuffer:=ADR(arDTC) ,
udiDTCBufferCount:=MaxDTC ,
udiDTCReceiveCount=> ,
udiDTCLostCount=> ,
xReceived=>
);

Hi,

Could you please give me some information about how l can practice on DM1 topic at home? Is there any small product l can buy so that l could practice on it?