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Hey, Just to let you know I finally got it, I can connect online now. What I did was that I disconnected the Ethernet cable from the network and I connect to the PLC via Profibus directly to the port. In this way I was able to connect online and check the amount of PG allowing for communication unde...

Hello, sorry for the delay in my answer but we still fighting with these PLC's So, we still not able to connect online to this PLC. Now we found that if we disconnect the Ethernet cable from the network, then it is possible to connect online using Profibus or even via Ethernet if I connect a cable d...

Hello Sania, thanks for your answer. I am answering here: do you can connect to any another plc over tcp? - Yes, I can connect to any other PLC, they are Siemens and it is not any problem[/b] try disable firewall - I wil try but if the other PLC's respond, I dont see that will help have ping to cpu?...

Hello, I really need help to understand what happened in a few machines that use Simatic Step 7 315F-2PN/DP CPU's. Without any reason I can't go any Online anymore, it is a complete production line, but these 2 machines are not possible to access online. These PLC's are connected to other machines v...

PPP thanks a lot for your help, I really appreciate that.

Did you have any chance to look the PLC Buffer? just to see what you think could be the problem?

Thanks again !!!!

Hello All, I really need help to solve an issue that is happening in a Siemens Step 7 PLC CPU 317F-2 PN/DP with a Micro Card Memory 2MB. This was running well, then went to stop mode and many leds were flashing (SF, BF and Stop). I checked the Program and this was gone, no more program. I downloaded...