Programming for J1708/1587...RS 485...?

[jonathanupr]

I am looking to get a VI up and going to receive inputs from J1708/1587 protocol... this is RS 485 input/output correct?

Just looking to read the data coming from the ECU..

Do I set up the VI just like an RS232 read/write VI?  And then just match the incoming data to a vector database file for data recognition.

Or is there something else I would be needing?

[Mr.F · Accepted solution]

Hi Jon,

You are correct that this protocol is similar to RS-485 and may be implemented on our 485 interfaces. The 485 standard lies within the specs of the J1708/1587 standard, but the latter implements some higher-level error checking and other functions that you will have to do manually if using a 485 interface. Both RS232 and RS485 are programmed in LabVIEW the same way, so the basic open, read/write close structure should work.The 485 interface will return "raw" data and you will have to build an application to interpret this data. This is not a "supported" feature of this card, so it is not guaranteed to work, but since the specs of one standard conform to the other, it should work. 

Good luck!