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redundancy system with two difference order number CPUs

6/27/2024 11:38 PM	Rate (0)
07112066 Member Joined: 9/28/2011 Last visit: 11/4/2025 Posts: 7 Rating: (0)	Hello all, I am using a redundancy system with two CPUs, model 6ES7 414-4HJ00-0AB0. One of the PLCs has a hardware failure, so I want to replace it with a CPU model 6ES7 414-4HM14-0AB0. Is this possible? Thanks all.

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6/28/2024 11:23 AM	Rate (0)
Raijin Joined: 2/6/2023 Last visit: 11/28/2025 Posts: 138 Rating: (15)	Hi, Unfortunately it is not possible. In a redundant system the S7-400H must have the same reference

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6/28/2024 1:45 PM	Rate (0)
07112066 Member Joined: 9/28/2011 Last visit: 11/4/2025 Posts: 7 Rating: (0)	Thanks for your answer.

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