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還告訴此模塊每個通道將在哪個速率組中運(yùn)行,如下所示
以及任何特殊信息(如
熱電偶模塊)。在運(yùn)行時,CPU會定期廣播“密鑰”
通知所有I/O卡,告訴他們此時要更新哪些速率組。
通過該初始化/按鍵廣播系統(tǒng),每個輸入/輸出模塊處理其
自有速率組調(diào)度,CPU干預(yù)少。
這些智能輸入/輸出模塊還具有卡上在線故障檢測和自動
校準(zhǔn)/補(bǔ)償。每個輸入通道都有自己的精密電壓
參考每分鐘一次,在不讀取輸入的情況下
微控制器讀取此參考。然后微控制器使用該數(shù)據(jù)讀取
來自故障檢測和自動溫度的參考電壓
補(bǔ)償/校準(zhǔn)。
當(dāng)車載設(shè)備
微控制器讀取每個參考電壓。如果獲得的讀數(shù)在外部
根據(jù)這些限制,系統(tǒng)確定輸入通道、A/D轉(zhuǎn)換器或
通道的精密參考電壓工作不正常。如果發(fā)生這種情況,
微控制器將該通道標(biāo)記為存在故障狀態(tài)。CPU將
然后采取應(yīng)用工程師在
應(yīng)用程序。
智能輸出模塊監(jiān)控每個通道的輸出電壓或電流
并在檢測到故障時向系統(tǒng)發(fā)出警報。
每個輸入/輸出模塊上都有一個保險絲。此保險絲可見,可以更換
通過模塊塑料蓋上的切口。如果保險絲熔斷,請更換
使用相同類型和尺寸的保險絲。
在所有電纜連接完畢之前,請勿向設(shè)備通電
有聯(lián)系的。如果您在
電纜已連接,您可以熔斷輸出上的保險絲
當(dāng)電纜的裸露端短接在一起時,模塊。
MicroNet Simplex和MicroNet Plus手冊26166V2
10伍德沃德
10.2-雙通道致動器控制器
10.2.1-模塊說明
圖10-3是雙通道致動器控制器模塊的框圖。
每個通道控制積分或比例、液壓機(jī)械或
氣動執(zhí)行機(jī)構(gòu)。每個執(zhí)行器多可有兩個位置反饋
設(shè)備。有多個版本可用,模塊零件號
指示模塊的大輸出電流能力。此模塊必須使用MicroNet低密度離散(灰色)電纜。不要使用
模擬(黑色)電纜。
圖10-1-雙通道致動器控制器模塊
10.2.2-模塊規(guī)范
概述:
通道數(shù)2
致動器類型比例或積分、液壓機(jī)械或氣動致動器
電源要求+5 V@0.5 A,+24 V@1 A



also tells this module in which rate group each channel is to run, as well as any special information (such as the type of thermocouple in the case of a thermocouple module). At run time, the CPU then periodically broadcasts a "key" to all I/O cards, telling them which rate groups are to be updated at that time. Through this initialization/key broadcast system, each I/O module handles its own rate-group scheduling with minimal CPU intervention. These smart I/O modules also have on-card on-line fault detection and automatic calibration/compensation. Each input channel has its own precision voltage reference. Once per minute, while not reading inputs, the on-board microcontroller reads this reference. The microcontroller then uses this data read from the voltage reference for both fault detection and automatic temperature compensation/calibration. Limits have been set for the expected readings when the on-board microcontroller reads each voltage reference. If the reading obtained is outside these limits, the system determines that the input channel, A/D converter, or the channel's precision-voltage reference is not functioning properly. If this happens, the microcontroller flags that channel as having a fault condition. The CPU will then take whatever action the application engineer has provided for in the application program. A smart output module monitors the output voltage or current of each channel and alerts the system if a fault is detected. Each I/O module has a fuse on it. This fuse is visible and can be changed through a cutout in the plastic cover of the module. If the fuse is blown, replace it with a fuse of the same type and size. Do not apply power to the unit until all the cables are connected. If you have the unit powered on before the cables are connected, you can blow the fuses on the output modules when the bare ends of the cables short together. MicroNet Simplex & MicroNet Plus Manual 26166V2 10 Woodward 10.2—Two Channel Actuator Controller 10.2.1—Module Description Figure 10-3 is a block diagram of the two-channel actuator controller module. Each channel controls an integrating or proportional, hydromechanical or pneumatic actuator. Each actuator may have up to two position feedback devices. There are several versions available, and the module part number indicates the module's maximum output current capability. A MicroNet lowdensity discrete (gray) cable must be used with this module. Do not use an analog (black) cable. Figure 10-1—Two Channel Actuator Controller Module 10.2.2—Module Specification General: Number of Channels 2 Actuator Type Proportional or integrating, hydromechanical or pneumatic actuators Power requirements +5 V @ 0.5 A, +24 V @ 1 A
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