- Check connection between your CPU and programming device (PC)
- Check PLC program ( No error, Correct file for CPU )
- Check your CPU mode ( Must be on STOP or Run-P )
- Reset CPU before downloading to protect fault from old program.
- Your Simatic can run completely.
How to download
- Select your object and download by select Menu -> PLC -> Download
- If RAM already have existing block, you have to confirm whether or not
the block should be overwritten.
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