Siemens SIMATIC S7-300 - Manual (Page 16)

2 Preparing the PC
12
SIMATIC S7-300 Getting Started for First Time Users
Getting Started, 04/2007, 6ZB5310-0NC02-0BA0
3. Configure the connection to the USB interface. This connection property
enables communication between the MPI interface of the CPU 312C and
your PC.
You have installed STEP 7 Lite and the software for the PC Adapter USB and
configured the interfaces between the PC Adapter USB and the CPU 312C.
Next, you will install the control components on the mounting rail.