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S7400 Battery

Created by: Amit_86 at: 7/15/2012 4:53 PM (7 Replies)

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7/15/2012 4:53 PM	Rate (1)
Amit_86 Platinum Member Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272)	AlexanderMT Hi, my name is Alexander. I read a forum about s7-400 battery from you. Cold you answer me this?: I have a s7-400 PLC running, and I don`t want to stop it, but I need to change the battery. Can I do it whitout stopping the PLC? DoI need to turn it off to change the battery? I think I don`t, but somebody told me that I have to turn it off to do it. Could you help me please? Thanks. Hello Alexander, you don't require to turn-off power for replacing battery. Go ahead and chage the battery without tension Best of luck
	VANDE MATARAM.....
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9/5/2012 6:27 PM	Rate (0)
Manishkools Posts: 50 Rating: (1)	Dear experts, another question comes to my mind that the S7-400 plc has got battery as well as internal memory (RAM) and external memory(EEPROM) so is it possible to run the plc with ...... 1 battery + RAM 2 RAM + EEPROM 3 ONLY RAM I can understand that the option no 2 is possible and some problem happened at power failure thanks manish
Manishkools Posts: 50 Rating: (1)
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9/5/2012 6:42 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 11/15/2024 Posts: 5697 Rating: (715)	Hello, There is even another option:ram+battery+EEprom. What is the exactlythequestion? You want to know how CPU react after power faillure in all situations? Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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9/6/2012 7:25 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	Hi, Manishkools EEPROM - This is flash card? I understand you correctly?
gre_m Posts: 947 Rating: (45)
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9/17/2012 6:40 PM	Rate (0)
Manishkools Posts: 50 Rating: (1)	Dear marcjan yes you understand my question correctly Mr. gream, actually i don't know I am talking about the memory (I thought to be EEPROM) installed in the slot of s7-400 PLC top side manish
Manishkools Posts: 50 Rating: (1)
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9/18/2012 10:31 AM	Rate (0)
gre_m Posts: 947 Rating: (45)	in the slot of s7-400 PLC top side possible install also RAM card. What you need?
gre_m Posts: 947 Rating: (45)
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9/19/2012 8:07 AM	Rate (0)
Manishkools Posts: 50 Rating: (1)	Hi, actually I have seen some previously installed system in which the EEPROM is used in the slot I was just curious to know what will happen in case of power failure in all the condition mentioned earlier The above information is only required to improve my knowledge about the PLC not for any project etc Manish
Manishkools Posts: 50 Rating: (1)
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9/19/2012 8:19 AM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 11/15/2024 Posts: 5697 Rating: (715)	Hello, 1 battery + RAM After power return, PLC start normally from RAM and no DATA loss. 2 RAM + EEPROM After power return, PLC loads program from EEPROM into RAM, all DB are loaded with initial values. 3 ONLY RAM Program is lost and needs to be downloaded again. Regards, Marcjan Attachment memory card.pdf (516 Downloads)
	Last edited by: Marcjan at: 9/19/2012 8:29 AM attached part of manual Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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This contribution was helpful to 2 thankful Users Amit_86 Manishkools

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