4/1/2014 1:16 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365)
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Hello, Redundancy in S7-400H is Hardware redundancy without using the functions you have mentioned in case Software Redundancy.Here, you don't need to de-activate the redundancy and download the program to each CPU.In the simplest case, while using STEP 7 downloading to master CPU suffices.Please, read the following topic: Loading Modifications into an H System / Standard system and have a look to chapter 17 (System modifications during operation )of this manual: http://support.automation.siemens.com/WW/view/en/82478488 NOTE:Downloading to a working machine needs a good understanding of hardware and software to avoid malfunctions. Best regards, Hamid Hosseini |
4/2/2014 4:51 PM | |
Joined: 1/28/2009 Last visit: 9/10/2024 Posts: 6849 Rating: (1365)
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Hello again, You don't need any control/Status bits to disable to enable redundancy again in S7-400H platform.It is possible to use a command in STEP 7(PLC-->Operating mode) and view the actual status of a fault-tolerant system.You can change the state of system as you like.Check the attachment. Please, read the following sections in THIS manual:
Best regards, Hamid Hosseini |
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