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醉公子紫辰
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樓主  發(fā)表于: 2018-07-16 17:27
  手上有個(gè)項目要用485通訊連接40個(gè)工位的稱(chēng)重感應器測量和對應工位的稱(chēng)重數字表頭顯示,用Q系列MODBUS模塊要太多很麻煩,就用了串口485通訊,在網(wǎng)上查了資料,要在協(xié)議中設置MODBUS的通訊協(xié)議,然后問(wèn)題就來(lái)了,我有5個(gè)從站是讀。總(gè)從站8個(gè)通道連接稱(chēng)重感應器),40個(gè)從站要發(fā)送(每個(gè)工位的稱(chēng)重數據要發(fā)送到表頭),用G.cprtcl 這個(gè)指令是每次觸發(fā)讀取和發(fā)送都要把這個(gè)指令觸發(fā)一次?還是說(shuō)只要將這個(gè)指令放置在程序最上面一致保持觸發(fā)就行了呢?請各位前輩指點(diǎn)迷津

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