2711P-B10C4A2【】2711P-B10C4A22711P-B10C4A2
梯形圖編程注意事項(xiàng)
1、避免雙線(xiàn)圈輸出
如在同一程序中同一元件線(xiàn)圈使用兩次或多次為雙線(xiàn)圈輸出。
注意:雙線(xiàn)圈輸出時(shí),前一次輸出無(wú)效,只有最后一次輸出才有效。
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★餐后水果:泰尼電氣
聯(lián)系人:張亮
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使用安全PLC/DCS 及安全網(wǎng)絡(luò)的優(yōu)點(diǎn)包括:
1 機(jī)械控制更大的集成性和靈活性
2 當(dāng)標(biāo)準(zhǔn)控制層智能化時(shí),能夠進(jìn)行更好更容易的故障診斷
3 更快、更方便的維護(hù)
4 減少安裝、調(diào)試以及重新配置的費(fèi)用
5 與對(duì)于邏輯單獨(dú)使用安全繼電器相比,降低了設(shè)計(jì)和硬件成本
2、輸入信號(hào)的頻率不能太高(高速計(jì)數(shù)器輸入除外)
PLC輸入信號(hào)的ON和OFF的時(shí)間,必須比PLC的掃描周期長(zhǎng)。
例如:考慮輸入濾波的響應(yīng)延遲10ms,掃描時(shí)間10ms,則輸入的ON或OFF時(shí)間至少為20ms。
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