I downloaded and installed the FactorySQL software but the OPC server would not load I get an error message saying
“Download Failed: Server did not specify content length”
What have I done wrong?
Do I need to purchase FactorySQL before I can download it?
Sounds simply like a problem with the actual file transfer. The installer for FactorySQL simply downloads kepware when that installation option is selected, it is not “bundled” into the FactorySQL install file.
If you’ve tried a couple times with no luck, I’d recommend going over to kepware.com and trying to download it directly from them.
Kepware has a demo available, but the actual drivers have various prices. The simulator, however, is free.
What type of PLC are you trying to connect to? If you’re just interested in playing around with FactorySQL, I’d recommend you go download kepware and install it with the default options, which will only include the simulator. If you have some actual equipment you want to talk to, you can either start with the kepware demo and eventually buy the driver, or look around and see if you can find a cheaper/free opc server.