GE Fanuc 90-70 IC697MDL640 is a 125 Volt DC Positive/Negative Logic, 16-Point Input Module. GE Fanuc 90-70 IC697MDL640 has Positive/Negative Logic Compatibility and the GE Fanuc 90-70 LED indicators which give the ON-OFF status of each point on the logic (PLC) side of the circuit.
由上述分析可知，掃描周期的長(zhǎng)短主要取決于程序的長(zhǎng)短。掃描周期越長(zhǎng)，響應(yīng)速度越慢。由于每一個(gè)掃描周期只進(jìn)行一次I/O刷新，即每一個(gè)掃描周期PLC只對(duì)輸人、輸出狀態(tài)寄存器更新一次，故使系統(tǒng)存在輸人、輸出滯后現(xiàn)象，這在一定程度上降低了系統(tǒng)的響應(yīng)速度。工業(yè)現(xiàn)場(chǎng)的干擾常常是脈沖式的、短時(shí)的，PLC的輸入/輸出響應(yīng)滯后，對(duì)一般的工業(yè)控制要求，是*允許的，還可以起到增強(qiáng)系統(tǒng)的抗*力。但是，對(duì)于控制時(shí)間要求嚴(yán)格、響應(yīng)速度要求較快的系統(tǒng)，就要采取措施減小輸入/輸出滯后的不利影響。
產(chǎn)品陳列：（圖片僅供參考，一切以實(shí)物為準(zhǔn)，產(chǎn)品價(jià)格、貨期和具體參數(shù)說(shuō)明請(qǐng)與我，感謝您的配合）
資料：
：小李
移動(dòng)- ：
- :86-
傳真詢價(jià)- 86-
郵件詢價(jià)-:1905391339
地址：廈門市同安區(qū)詳橋二里50號(hào)1705單元
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