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|12/19/2009 5:20 AM|
Last visit: 3/27/2012
I am using S7 414-2DP CPU with Flash EPROMwithbackup batteries, actually i want to know what is the use of memory card and Batteries.
If the battery is for the backup then why we need memory card.
|12/19/2009 7:24 AM|
Last visit: 9/26/2014
Well,inshort, the backup batteryis just forthe back-up/keep your data (e.g program) during theloss of powersupply.To repace the batterythis link can give you for more information.
When should you replace the back-up battery on your S7 300/400 controller?
For the flashEPROM, you can permanently backup your datain case of power failure without backup batteries. You can look into these links for moreinformation.
How can you backup your program from the load memory?
SIMATIC Fault-tolerant systems S7-400H
Using memory cards in the CPUs 41x-H
Hopethese are helpful to you.
Last edited by: how come at: 12/19/2009 7:31 AM