我使用的是S7_300 ,两套PLC,都为315_2DP。想组成MS型PROFIBUS.配好MASTER和SLAVE后,在组态好编程器,但是编译时总出现“in station SIMATIC 300(2) there are additional nodes that also have to be reloaded.”字样。两个PLC都是如此。下载时显示“NO other active partner be found",请问如何解决?谢谢!(在netpro中,都已经挂在总线上了,编译无错误,只有上面的警告)