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Programm stored in CPU?

1/28/2011 6:47 AM	Rate (0)
dilip_123 Posts: 73 Rating: (0)	Hello Experts I want to know, Where the programm of plc stored, if it is not having a external mmc card ? [schnippschnapp] second question is splitted to why it is necessary for S7300 cpu to have a memory card..
dilip_123 Posts: 73 Rating: (0)	Last edited by: O_Moderator at: 1/28/2011 12:28 PM
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1/28/2011 10:17 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 11/4/2024 Posts: 4351 Rating: (1452)	Hi, the PLC has two types of memory, and could be compared as a PC PLC Work Memory = PC RAM PLC Load Memory = PC HDD, disquete, USB sticks, etc. In the S7 the Work Memory is internal to the CPU. The S7-1200 has a internal load memory that could be expanded with a external MMC.
	Denilson Pegaia Siemens Industry Sector Technical Support
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