Posted 29 Nov 2019 Hello, I currently have two IC220PNS001 connected to IC695PNC001. The PLC being used is IC695CPE330. Out of the two PNS001, one of them has a solid SF Red light on which means bus error according to the Status Parameter IO. I disconnect every single IC220 card connected and downloaded the whole configuration but I still have a Bus error. PS: I have also tried to switch the PNS001 with the brand new out of the box and I still have the same error. In the manual, it says Profinet Diagnostic available, can somebody please guide me as to where I can find the Profinet Diagnostic, also is there any manual for PNS001 which explains the in-depth debugging process for this PROFINET Controller. 1 person likes this Share this post Link to post Share on other sites