1。KOP.pdf[Ladder Logic (LAD)for S7-300 and S7-400  Programming]中文手册
2。S7-300CPU[S7-300 Programmable Controller CPU Specifications,CPUs 31xC and   CPU 31x]  中文手册
另问一下，上海、江苏哪个代理商处有培训，SIEMENS的太贵了