Siemens S7-300 用户手册

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4 Configuring 
the control in 
STEP 7 Lite
42
SIMATIC S7-300 Getting Started for First Time Users
Getting Started, 04/2007, 6ZB5310-0NC02-0BA0
4.5 Downloading and checking the module 
configuration to the CPU 312C
Before you download the module configuration to the CPU 312C, you will delete 
the old configuration from the CPU. After downloading, you will check whether 
downloadable system data were able to be generated from your module configu-
ration. 
Performing a memory reset on the CPU 312C
1. Delete the old program blocks and configurations from the CPU 312C.