"No response form PLC, restarting communication" Node-red S7

This is probably some easy fix problem for you guys with black belt in these issues, but for me, it has become an insurmountable problem...

My setup is as follow:

I have a network switch which connects to -PLC 1214C -IOT2040 (xp1LAN) -PC.

I believe I have tried all thinkable things and here follows a summary:

• Unchecked “Optimized block access” in TIA
• Checked “permission to access with PUT/GET” in TIA
• Created variables in DB1 “see png”
• Optimized S7 in accordingly to descriptions in node-red (I have tried DB1,BOOL0 , DB1. Q0.0 etc. etc)
• My Ethernet ports are separated with different ip´s.
• Etc.etc.

I’m running out of options here and hoping for some valuable push in the right direction.

Thanks in advance!

Hi!

Thanks for fast reply!

I already tried those, and I tried them again (just to be certain). Now I get “No respons from PLC, restarting communication” and “Failure (Bad Values)”

Thanks a million for taking yore time to help me!

Hi!

Found another thread on the interweb (Siemens support forum). I factory reset my PLC then I got it working.

Thanks a million for your help. Hopefully I will soon be up and running with my project!

Gustavsson

Hi!

Found another thread on the interweb (Siemens support forum). I factory reset my PLC then I got it working.

Thanks a million for your help. Hopefully I will soon be up and running with my project!

Hi!
I just started a week ago with IOT2040.
Now I'm having the same problem.

I factory reset the PLC
Reboot IOT2040 many times
Have deleted all Flows

But still in the DEBUG slide I get an error message

"No response from PLC, restarting communication"

What could be the reason for that ? :(

Mr. Gustavsson are you still using IOT technology?
I still don have the feeling this is an stabile equipment that can be used
in industry, seems not so reliable IOT2040 and UBIDOTS.
I have sent some data already but data visualization freeze on UBIDOTS.