6/4/2024 5:44 PM | |
Joined: 3/11/2024 Last visit: 9/30/2024 Posts: 6 Rating: (0) |
Hi all, I have a S7-319 3DP/PN which is configured as a Profibus master of DP1 and DP2. in DP1 network, it has multiple remote I/Os and two IM151-7 F-CPUs, which are configured as DP-Slaves (I-Slaves). In the F-configuration tab, these two CPUs send and receive data to and from each other. We had a problem and I lowered the baudrate from 1.5 Mbps to 187.5 kbps. Each F-CPU can read data from its own I/Os without any problem. Now, there is no communication between these two F-CPUs. I attached the diagnostic messages from one F-CPU. The messages for the other CPU is almost the same. Does anyone have any suggestion? Thank you AttachmentDiagnose-1.txt (359 Downloads) |
6/4/2024 5:49 PM | |
Joined: 3/11/2024 Last visit: 9/30/2024 Posts: 6 Rating: (0) |
I attached the diagnostic messages of the second F-CPU. Do I need to change any settings related to monitoring and/or communication cycle time related to F-CPUs when I changed the baudrate? I have to also mention that the "Max. cycle time of the F-runtime in ms" for both F-CPUs are 200 ms. Thank you AttachmentDiagnose-2.txt (312 Downloads) |
6/5/2024 7:01 AM | |
Joined: 4/24/2006 Last visit: 10/3/2024 Posts: 8744 Rating: (1168) |
Hello, Before you changed the baudrate, did it function correctly? You could change TimeOut parameter. Here a link to manual: SIMATIC Industrial Software SIMATIC Safety - Configuring and Programming See chapter 9, 13,15 and appendix A Best regards, Wizard |
This contribution was helpful to1 thankful Users |
6/12/2024 12:19 AM | |
Joined: 3/11/2024 Last visit: 9/30/2024 Posts: 6 Rating: (0) |
You are right. As I mentioned, it is now working with 500kbps. Thank you |
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