EEPROM and PLC ranges

tested

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Join Date
Feb 2010
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germany
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Can someone help me with the following questions:

1. What is the use of an EEPROM in a PLC?

2. Why do PLC's have IO ranges such as 2048 and not 2000?

Thanks
Tested
 
EEPROM's have absolutely no reason to be in a PLC. The only real way of having secure memory is to actually burn a ROM. EEPROM's are much too affected by cosmic rays.

2048 is SOooooooo much better then 2000, no? It's just marketing. Old, boring PLC's used to have only 2000 available I/O, then some marketing genius figured out that if they added a couple more transistors, they could sell a 2048 I/O model. It's kind of the reverse of "19.99" is psychologically much cheaper then "20.00".
 

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