Hi, a quick question that I cant seem to find an answer to I hope someone could help please?

I can receive and display J1939 messages OK and send out back out fixed value can data. but Is it possible re transmit a J1939 message with a new source address yet with the same data as the received message without using a script?

basically to spoof another device that needs is expecting the data from another transmitter that is not present.

Yes, it can be done with a Free Form message and an event.

The message that is read from source address 0. The read complete event calls the SpoofEvent to transmit the message.
The spoof message from source address 1 with the same variables that were read in.
SpoofEvent just transmits the spoof message.
Both variables V1 and V2 are defined the same way.
There is no message buffering so the message needs to be transmitted before the next message is read.

PERFECT! many thanks Boyce.

HI Boyce,

this works nicely for the same data, we have a new challenge today;

Is there also a method to read in data but break down each byte to a variable that can be changed in powervision based on some other user action, then re packed as a complete message and sent back out.?

thanks, Dave.

Yes, the Free Form CAN message can be defined with 8 bit values that are assigned to the variables. There will be one message that is receive and another one to transmit. Just set the value of the transmit variables as needed and transmit.

super, thanks Boyce.