S7-300 Manual
I think this is the manual you are looking for:
- S7-300 Programmable Controller Hardware and Installation
- A5E00105492-02, Edition 09/2002
However, it has been updated to these manuals. Search the Siemens Service and Support web site for these Entry IDs and you can download the manual.
- S7-300, CPU 31xC and CPU 31x: Installation, Operating Instructions
- A5E00105492-05, Edition 08/2004
- Entry ID: 13008499, Date: 08/27/2004
- S7-300 Automation System, Hardware and Installation: CPU 312IFM -318-2 DP
- A5E00203919-01, Edition 06/2003
- Entry ID: 15390415, Date: 08/01/2003