When uploading from a T40 Compax3, if you get a CRC = FFFF CAM no source package loaded , you can click cancel and then save the project.
This is not a problem or fault on the drive. It just indicates there is not a cam table defined in memory on the Compax3.
Even though it’s a T40, you don’t have to be using the Cam functions in the PLC CoDeSys program.
7/1/22jh
http://divapps.parker.com/divapps/emn/faq/c3/no_cam_upload.png
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