beethoven_ii
Lifetime Supporting Member
Yesterday I updated the firmware on 10x 1756-L55 ControlLogix plc's for a customer from version 10 to version 13 so they can get online using Windows 7 instead of XP. The last unit I came to do would not allow me to successfully perform an upload so I can ensure that when I re-download the project after the firmware update the customer doesn't lose anything. The upload starts but while uploading the tags database it comes up with the error described in this thread. I've tried uploading by Ethernet through a switch and and also direct into the ENBT card with a cross-over cable as well as through the cpu comm port using RS232 but the results are always the same. I've tried Googling this but there seems very little information out there. Has anyone come across this before and found the cause & hopefully a solution?