| 詳細(xì)參數(shù) | |||
|---|---|---|---|
| 品牌 | Agilent | 型號(hào) | HP5517D |
| 結(jié)構(gòu)形式 | 模塊式 | 安裝方式 | 控制室安裝 |
| LD指令處理器 | 硬PLC | 功能 | 激光干涉儀 |
| 工作電壓 | 220VAC | 數(shù)據(jù)容量 | 4兆字節(jié) |
| 產(chǎn)品認(rèn)證 | CE | 環(huán)境溫度 | 0°Cto,60°C |
| 環(huán)境濕度 | 5至95%,非冷凝 | 加工定制 | 否 |
| 重量 | 3.4公斤 | 產(chǎn)地 | 瑞典 |
Agilent HP 5517D 激光干涉儀
執(zhí)行時(shí)間短可加快HP 5517D對(duì)一般輸入信號(hào)的響應(yīng)速度。從討論HP 5517D的工作原理知，從對(duì)HP 5517D加入輸入信號(hào)，到HP 5517D產(chǎn)生輸出，最理想的情況也要延遲一個(gè)HP 5517D運(yùn)行程序的周期。因?yàn)?span style="font-size:16px;">HP 5517D監(jiān)測(cè)到輸入信號(hào)，經(jīng)運(yùn)行程序后產(chǎn)生的輸出，才是對(duì)輸入信號(hào)的響應(yīng)。不理想時(shí)，還要多延長(zhǎng)一個(gè)周期。當(dāng)輸入信號(hào)送入HP 5517D時(shí)，HP 5517D的輸入刷新正好結(jié)束，就是這種情況。這時(shí)，要多等待一個(gè)周期，HP 5517D的輸入映射區(qū)才能接受到這個(gè)新的輸入信號(hào)。對(duì)一般的輸入信號(hào)，這個(gè)延遲雖可以接受，但對(duì)急需響應(yīng)的輸入信號(hào)，就不能接受了。對(duì)急需處理的輸人信號(hào)延遲多長(zhǎng)時(shí)間PLC能予以響應(yīng)，要另作要求。
為了處理急需響應(yīng)的輸入信號(hào)，HP 5517D有種種措施。不同的PLC措施也不完全相同，提高響應(yīng)速度的效果也不同。一般的作法是采用輸入中斷，然后再輸出即時(shí)刷新，即中斷程序運(yùn)行后，有關(guān)的輸出點(diǎn)立即刷新，而不等到整個(gè)程序運(yùn)行結(jié)束后再刷新。
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---------------------- 主 營(yíng) 類 目 ----------------------
PLC模塊，DCS備件，可編程控制器，CPU模塊，IO模塊，
DO模塊，AI模塊，DI模塊，網(wǎng)通信模塊，以太網(wǎng)模塊，
運(yùn)動(dòng)控制模塊，模擬量輸入模塊，模擬量輸出模塊，
數(shù)字輸入模塊，數(shù)字輸出模塊，冗余模塊，電源模塊，
繼電器輸出模塊，繼電器輸入模塊，處理器模塊 等。
Short execution time can speed up the response speed of HP 5517D to general b signals. From discussing the working principle of PLC, from adding b signal to HP 5517D to generating output of HP 5517D, the most ideal situation is to delay a cycle of HP 5517D running program. Because HP 5517D monitors the b signal, the output generated after running the program is the response to the b signal. When it is not ideal, it needs to extend one more cycle. When the b signal is sent to the PLC, the b refresh of the HP 5517D just ends, which is the case. At this time, it is necessary to wait one more cycle before the b mapping area of PLC can receive this new b signal. Although this delay is acceptable for general b signals, it is unacceptable for b signals in urgent need of response. How long is the delay of the b signal that needs to be processed The HP 5517D can respond, and it needs to make other requirements.
In order to deal with the b signal that needs response urgently, HP 5517D has various measures. Different HP 5517D measures are not exactly the same, and the effect of improving the response speed is also different. The general b is to b interrupt and then output immediate refresh, that is, after interrupting the operation of the program, the relevant output points will refresh immediaby, rather than wait until the end of the whole program.
