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francevendee

S7 300 & 400 Back Up Batteries

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My MMis are telling me that I have low batteries. Can someone tell me what Siemens part numbers I need for batteries for both 300 & 400 CPUs. Also is there a procedure to follow in changing batteries for both 300 & 400 CPUs. Thanks

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Hi, For S7-400 There will be 2 Batteries you can switch to second one and then change the first one. Rg Ns

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