Hi,
Student here, small bench setup at the university, S7-1200 1214C and a KTP700 Basic PN, TIA V16. Sorry if this is basic.
The panel's on 192.168.0.20 and my laptop's on 192.168.0.100, and it answers a ping every single time. When I do Download to device on the HMI, TIA finds the panel in the search, I pick it, and a few seconds later it comes back with "No connection to the device could be established". The panel's sat on its start screen running the project I loaded last week.
I've tried a different cable, the one the PLC uses, and the PLC downloads fine over it, and I've checked the IP in the panel settings, it's 192.168.0.20 like it should be. I don't even know if PN/IE is the right setting for Ethernet. Two evenings on this and I'm stuck. Is PN/IE even the right thing to pick for plain Ethernet, or does the panel have to be put into transfer mode first?
V16, fine. PN/IE is PROFINET / Industrial Ethernet, so yes, that's the Ethernet one. The panel's running your old project, right, not sitting in the Start Center? What did you set on the panel under Settings, Transfer, before you loaded it last week? I leave that off on machines I ship, on purpose, and then forget I did.
Yes, the old project's running, the start screen with my buttons on it. I've never opened the Transfer settings on the panel. My first download was done while the panel was in the Start Center after it booted. I didn't know there was a setting for it.
Then that's your answer. The panel takes a transfer in two cases: it's sitting in the Start Center, or the runtime's running and remote transfer is enabled for that channel. Yours is running with the channel off, so TIA sees the panel in the search, which is DCP, and then the transfer itself gets refused. Ping doesn't tell you anything about that.
On the panel: get into the Start Center, Settings, Transfer settings. Set PN/IE to Enable and tick Remote control, the wording shifts a bit between image versions. Save, then press Transfer, or just start the runtime again. After that Download to device works with the runtime up.
I couldn't find any way to exit the runtime, there's no button for it in my project. In the end I power cycled the panel and pressed Settings quickly in the Start Center before the runtime started. Then Transfer settings, PN/IE Enable, Remote control ticked. Download went through first time.
So the panel was refusing because transfer was disabled and my project was running over the top of it. The fix was only the Transfer settings on the panel, PN/IE enabled with remote control. I get now that the search works over DCP and the transfer is a different thing entirely.
What I still don't know is how to exit the runtime without power cycling. Is that a button I'm meant to add myself? Thank you kiran_s and tomhw.