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aabbcc296
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樓主  發(fā)表于: 2020-06-04 00:06
請教大神:西門(mén)子S7-200PLC，CPU226有2個(gè)串口，與三菱D700用Modbus RTU  485通訊控制，如果加個(gè)西門(mén)子SMART觸摸屏連接到S7-200   CPU226PLC，那加的這個(gè)觸摸屏以及PLC、變頻器再怎么設置通訊？S7-200已經(jīng)是主站了，變頻器是從站了。把觸摸屏連到另一個(gè)串口，怎么設置？
[ 此帖被aabbcc296在2020-06-04 08:22重新編輯 ]
ajunn
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1樓  發(fā)表于: 2020-06-04 03:00
PLC與變頻器通信做主站了，再與HMI要用另一個(gè)串口才行

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