1/30/2015 10:04 PM | |
Joined: 11/29/2011 Last visit: 8/19/2024 Posts: 1359 Rating: (232) |
Hi, I have an interesting project with an S7-414-5H with 7 3rd party HMI. I get notified by my client that they problems to download to the station. I tried to download myself, and I noticed that the station is really slow to download. I decided to switch off all the HMIs. Suprise the download speed up and everything back to normal. The issue is that the HMIs makes the station so slow that the user have problems to operate the machines. I wonder what could be done to resolve the issue without redesign the system. The configration: S7-414-5H - Beier iX. The Communication is going trough CP443-1, ISO-on-TCP. The setup process we used described here. Any idea appreciated. I would like to help my client, but I am not sure I can. |
Last edited by: MicroMan at: 1/30/2015 10:09 PM- What you read here, please check with manuals and your requirements. |
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2/6/2015 6:08 AM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365) |
Hello MicroMan, H-CPUs' performance is not really good in communication compared to standard CPUs.There is a limitation for OPs connected to H-CPUs that is 4 OPs/MPs.This is for SIMATIC products and I think case is worse for the 3rd party HMIs.The proposed solution would be better CPU or connecting HMI to a satndard CPU only for communication. https://support.industry.siemens.com/cs/#mdm/82478488?c=26862496395&lc=en-WW
SIMATIC OPs, SIMATIC MPsDo not install more than 4 OPs or 4 MPs in a fault-tolerant system. If you do need more OPs/MPs, your automation task may have to be revised. Contact your SIMATIC sales partner for support. Do not select a screen refresh cycle time of less than 1 s, and increase it to 2 s as required. Verify that all screen tags are requested within the same cycle time in order to form an optimized group for read jobs.
I hope this helps, Hamid Hosseini |
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