2/29/2020 7:07 AM | |
Posts: 25 Rating: (0) |
Help me I want to know if I can use TWO S7 315 CPU's Redundant with each other Thanks |
2/29/2020 11:49 AM | |
Joined: 9/27/2006 Last visit: 9/19/2024 Posts: 12282 Rating: (2684)
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Hello hussein; You van only use 2x S7-300 CPUs in redundant mode by using a Software Redundancy license: https://support.industry.siemens.com/cs/ww/en/view/1137637 Before you start working on such a project please read the first chapters to understand the principles of SWR (software redundancy): it is considered a warm backup system (S7-400H systems are considered hot backup) where the redundant link uses one of the standard communication links available on the S7-300. MPI, Profibus, or Ethernet. Turnover between the primary CPU and the standby can take up to a second, depending on the network selected. And the redundancy must be programmed in the CPU's function blocks, under your responsibility. If you decide to purchase a SWR license and start programming, you will find many threads in the forum asking for help and support on SWR, search for them using the search box at the righr of this page to look at the most delicate issues discussed. Hope this helps, Daniel Chartier |
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