Hello, I am having problems with SF led light on S7-300 PLC.

I am using one PLC to control two drives via PROFINET IRT.  Drives have been commissioned via STARTER and TIA Portal, and are working and communicating fine.
I am also able to download configuration to PLC (without errors) and to go online. When I go online error with PN port 2 occurs (port in which cable from PC to PLC is connected).

I uploaded some pictures and diagnostics buffer.

Equipment used:

• CPU 315F-2 PN/DP
• 2x S120 drive, CU310 PN and TM31 on both drives
• Windows 7 pro, x64
• TIA Portal v13

Is there something I can do? 

Bruno

Hello,

you PC IP address seems to be conflicting with any of the other device. Please check it.

Kbv.

Hi Kbv, 

I checked and changed PC IP few times just to make sure, but it doesn't seem to be the problem. 

Kbv

Hello,

you PC IP address seems to be conflicting with any of the other device. Please check it.

Kbv.

Hello Bishop,

Normally if everything is setup correctly in the Topology View and all devices have their unique PROFINET device name assigned, they're getting their IP address automatically. Are you sure the device names are entered correctly on both sides? 

It seems that the PLC is not detecting the PC. The PC on the other hand is detecting the PLC, so the PLC's device name is correct.

Please check.

Regards,

Alex

Hi Alex, thank you for your response.

You were correct, I made a mistake and assigned PROFINET name to PC station instead of IE general submodule. Now that I changed it, it works.

Thanks everyone for help!

Bruno

Bishop181

Hi Alex, thank you for your response.

You were correct, I made a mistake and assigned PROFINET name to PC station instead of IE general submodule. Now that I changed it, it works.

Thanks everyone for help!

Bruno

You're welcome. Good luck.

Regards,

Alex