SAE J1939 is a CANbus protocol that is supported by Enhanced Division Vision and Samba OPLC™ models. Within the J1939 network, the Vision functions as an ECU (Electronic Control Unit). Note that Vision supports transport protocols such as BAM and RTS/CTS.
Depending on the Vision model, the CANbus port may be an integral part of the PLC, or may be purchased and installed separately. Unfurtunetly UniStream family does not.
The structure on the SAE J1939 protocol is as follows:
Here you'll notice that Priority is the first 3 bits and data page the 4th and 5th bit. Then 8 bytes for the PDU Format(PF) and Specific (PS). All this information should be field according to the document you send us.