要求在昆侖組態(tài)觸摸屏上能夠顯示數(shù)顯表的值，求三菱plc與數(shù)顯表之間怎么通訊的？？？
                                      昆侖組態(tài)觸摸屏
                                                      |
                    
                                            三菱PLC
    
                                                      |

                       顯表       顯表      顯表    
顯表之間串聯(lián)，最后連到plc上

RS485直接跟屏通信，不用經(jīng)過PLC。