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yxianming
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樓主  發(fā)表于: 2024-06-17 17:37
圖片：
WINCC 7.4做上位機，利用其報警器功能，制作了一套語(yǔ)音播報系統，現場(chǎng)設備有故障或異常時(shí)，上位機播放相應音頻文件來(lái)提醒作業(yè)人員進(jìn)行處置。用的是TCP/IP通訊。但現有個(gè)問(wèn)題，上位機與PLC之間的通訊有時(shí)會(huì )中斷，這就導致無(wú)法進(jìn)行故障語(yǔ)音播報。
請問(wèn)各位高人，有什么辦法可以在通訊中斷時(shí)（如圖：對勾變成感嘆號時(shí)），上位機能有反應并進(jìn)行語(yǔ)音播報。謝謝先�。�！      
sunzengli
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1樓  發(fā)表于: 2024-06-19 12:54
在PLC側寫(xiě)一段心跳測試程序，每過(guò)一段時(shí)間置位一個(gè)變量。在wincc側用腳本每過(guò)一段時(shí)間復位這個(gè)變量。當PLC側長(cháng)時(shí)間檢測不到這個(gè)變量為0，則判斷通訊失聯(lián)，wincc側長(cháng)時(shí)間檢測不到這個(gè)變量為1，判斷通訊失敗。

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