角度*感應器指令
Rotation* Sensor Block

本指令用來計算馬達旋轉的滴答數(16下為一圈)或是圈數.並可將數據經由資料線傳送出去,或是傳送是否在觸發值上下的邏輯(真/偽)訊號.
This block counts the number of ticks (16 to a rotation) that your motor turns. Through data wires, this block can send out the current number of ticks and a logic signal (true/false) based on whether the number of ticks falls above or below a trigger point

*該感應器必須使用轉接線來連接NXT. 詳情請洽LEGO Education(http://www.lego.com/education/)
* This sensor requires a converter cable to connect to the NXT. Please contact LEGO Education for more information. (http://www.lego.com/education/)

觸發點是指一個讓某種情況發生的特定數值,例如,當機器人在馬達旋轉超過160(剛好10圈)下時停住.那麼觸發值就應該設為160.
A trigger point is the specific value in a range of numbers where a change in condition occurs. For example, you might program your robot to stop when the number of ticks passes 160 (which is equal to 10 rotations). The trigger point would be 160.

使用鍵盤輸入觸發值,並指定感應器的偵測範圍(觸發值以上或是以下).可用下拉式選單選擇,範圍內的數值會發送"真"值訊號
Specify the trigger point by typing a value into the input box. To specify the range (above or below the trigger point) that will generate the “true” signal, use the pull-down menu to choose greater than or less than [the trigger point].

預設值為超過16下(16下為一圈)就會傳送"真"值.若少於16下(設定少於時為真)時就用下拉式選單選擇"少於"
The default setting for the Rotation* Sensor block is for ticks above 16 (16 to a rotation) to generate a “true” signal. To switch the “true” portions of the range (setting values below 16 as “true”), you choose “less than” in the pull-down menu.

回饋區顯示現在旋轉滴答數(16下為一圈).接收回饋前,先確定馬達確實接在所選的NXT輸出端上並功能正常)
The feedback box in the configuration panel shows the current number of ticks (16 to a rotation). (To receive feedback, make sure that the sensor is connected to the chosen port and that communication has been established with the NXT.)

要讓感應器工作傳遞資料,必須至少使用一條輸出連接線來傳送資料.(請參閱下方資料集線器章節).You must drag at least one output data wire from this block’s data hub to another block for any information to be sent. (See the Data Hub section below for more information.)

顯示設定
Display Settings

1. 字母顯示角度感應器偵測的輸出端.視需要可以修改.
   The number shows which of your NXT’s ports are connected to the Rotation Sensor. You can change this number in the configuration panel if you need to.
2. 設定要計算的方向:前進或後退.
   SThis icons shows which direction the sensor will be monitoring: forwards or backwards.
3. 設定此指令讀取滴答數(16下為一圈)或是歸零感應器.
   This icons shows whether the block is set to read ticks (16 to a rotation) or to reset the sensor.
4. 當指令放在工作區時,資料集線器會自動打開.至少必須使用一條輸出資料線來傳遞數據到其他的指令.
   The block’s data hub will open automatically when the block is placed in the work area. At least one data wire must be dragged from the block’s output plug to another block’s data hub.

設定角度*感應器指令
Configuring the Rotation* Sensor Block

1. 選擇連接的輸入端,預設值為2,視需要可以更改
   Choose the port where your rotation sensor is plugged in. By default, the block will be set to port 2 for a rotation sensor. You can change this selection if you need to.
2. 設定要計算的方向:前進或後退.
   Set the direction you want to monitor using the radio buttons: forwards or backwards.
3. 輸入觸發值,並選擇大於小於觸發值時所傳送出的"真"值>
   Type the trigger value into the input box and use the pull-down menu to specify whether you want the “true” region to be greater than the trigger value or less than it.
4. 回饋區顯示現在旋轉的滴答數(16下為一圈).可按"歸零"鍵歸零
   The feedback box displays the current number of ticks (16 to a rotation). The Reset button will return the value to zero.

設定角度*感應器指令的資料集線器
Configuring the Rotation* Sensor block’s Data Hub

用資料線可以任意地用來控制接收角度*感應器指令.(從其他指令的資料集線器到接收角度感應器指令的資料集線器).
You can control the Rotation* Sensor block dynamically by connecting data wires (from other blocks’ data hubs) to the Rotation* Sensor block’s data hub.

把指令放在工作區上後,可以按圖示的左下角來打開資料集線器.
Open a block’s data hub by clicking the tab at the lower left edge of the block after it has been placed on the work area.

連接到集線器左邊連接埠的資料線是屬於負責傳遞資料進入指令中,而要從指令送出資料時,則須從集線器的右邊連接埠連接資料線.
Data wires carrying input information to a block are connected to the plugs on the left side of its data hub. Data wires carrying output information are connected to the plugs on the right side.

[A]輸入連接埠 [A] Input plug
[B]輸出連結部 [B] Output plug
[C]數字資料線(黃) [C] Number data wire (yellow)
[D]邏輯資料線(綠) [D]Logic data wire (green)
[E]文字資料線(橘) [E]Text data wire (orange)
[F]無效資料線(灰) [F]Broken data wire (gray)

資料由輸入端傳至傳出端
Passing from the input plug to the output plug

如果輸入連接埠有對應的輸出連接埠(請參閱 A 以上)時,那麼輸入的資料就會原封不動地傳遞到輸出連接埠.在這樣的情況下, 如果輸入連接埠連著資料線,那麼就只能使用輸出連結埠來做連結. 也就是說,當連結輸出連接線到這樣的輸出連接埠,而不透過相對應的輸入資料線時,就會讓該輸出連接線呈現無效的狀態.
If an input plug has a corresponding output plug (see A above), the input data will pass through from the input plug to the output plug without being changed. In this case, you can only use the output plug if the input plug is connected to an input data wire; connecting an output data wire to such an output plug without a connected input data wire will cause the output data wire to be “broken” (and colored gray).

特定的資料型態
Data wires carry specific types of data

每條資料線都負責傳送特定資料.例如,一條從邏輯連接埠拉出的資料線則只能連結到另一個同屬邏輯連接埠的集線器上.
Each data wire carries a specific type of data between blocks. For example, if a data wire is dragged from a logic plug on a block’s data hub, it can only be connected to a logic plug on another block’s data hub. The chart below shows what kind of data each plug can accept or send out.

資料線顏色
Data wire colors

資料線依照特定的顏色作識別:黃色資料線傳送數值資料、綠色資料線傳送邏輯資料(真/偽)及橘色資料線傳送文字資料
Data wires are identified with specific colors: wires carrying number data are colored yellow, wires carrying logic data are colored green, and wires carrying text data are colored orange.

無效的資料線
“Broken” data wires

如果資料線連結到錯誤資料型態的連接埠時,則該資料線會呈現斷線無效狀態並以灰色表示.而有無效的資料線存在就無法下載程式.
If you try to connect a data wire to a plug of the wrong data type, the data wire will be broken (and colored gray). You will not be able to download your program if a data wire is broken.

點選無效的資料線時,在工作區右下方的幫助視窗中會看到無效的原因.
If you click a broken wire you can read why it is broken in the small help window in the lower right corner of the work area.

資料必須在連接埠的限制範圍內
Data must bewithin the possible range of the plug

如果資料線傳輸該連接埠資料範圍之外的資料時,該指令不是忽略資料就是轉成合理範圍內的資料.對那些只能接收少量輸入值的連接埠來說(例如,0,1,或2),該連結埠就會忽略超出範圍的數值.
If an input data wire transmits a value outside the possible range of the plug it is connected to, the block will either ignore the value or change it to a value within its range. For plugs that allow just a few input values (example: just 0, 1, or 2), the plug will ignore the input if a value arrives outside its range.

而對那些可以接收大量範圍輸入值(例如: 0~100)的連接埠來說,該連接埠就會將數值轉成可接受的範圍. 例如, 移動指令的動力連接埠接收到150的輸入值時,那麼移動指令就會轉成100(也就是動力連接埠的範圍內).
For plugs that accept larger input ranges (example: 0 – 100), the plug will force any input outside its range to fit. For example, if a Move block’s Power plug receives an input value of 150, the block will change the input value to 100 (i.e., a number within the Power plug’s range).

下表列出本資料集線器中各連接埠的特性
This chart shows the different characteristics of the plugs on the Rotation* Sensor block’s data hub:

	連結埠 Plug	資料型態 Date Type	資料範圍 Possible Range	資料意義 What the Values Mean	連接埠例外說明 This Plug is Ignored When...
	輸出端 Port	數字 Number	1 - 4	1 = Port 1, 2 = Port 2, 3 = Port 3, 4 = Port 4
	觸發值 Trigger Point	數字 Number	0 - 2147483647	用來比較的數值 Value to compare against
	觸發值方向 Trigger Point Direction	邏輯 Logic	真/偽 True/False	偵測的方向 真 = 正轉 偽 = 逆轉 Direction to use in comparison: True = Forwards, False = Backwards
	大於 / 小於 Greater / Less	邏輯 Logic	真/偽 True/False	比較方式: 真 = 大於, 偽 = 小於 Logic used in comparison: True = Greater, False = Less
	歸零	邏輯 Logic	真/偽 True/False	真 = 歸零 偽 = 讀取 True = Reset, False = Read
	是 / 否 Yes / No	邏輯 Logic	真/偽 True/False	比較結果 Result of comparison
	方向 Direction	邏輯 Logic	真/偽 True/False	真 = 正轉, 偽 = 逆轉 True = Forwards, False = Backwards
	滴答數 Ticks	數字 Number	0 - 2147483647	感應器讀到的數值(已轉換) Scaled value read from sensor.