9/5/2014 5:13 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685)
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Hello Joe; Could you please explain what you mean toi do? If you simply want to download to the PLC, have a look at the following FAQ: How can I get an overview of the S7-400 memory concept? There is a small amount of RAM memory (generally 256 kB) in the S7-400 CPUs, it acts as the first level of load memory for the PLCso you can download a small program and a basic coinfiguration file.to the CPU without an additional memory card. For larger programs you need either a RAM card (supported by the power supply batteries, program is lost if battery support is down) or a flash card (EEPROM, program is maintained without battery support, but you must put the CPU in Stop mode before downloading). Hope this helps, Daniel Chartier |
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