產(chǎn)品標(biāo)題: T8403 ICS TRIPLEX 三重可信TMR 24 Vdc數(shù)字輸入模塊T8431

型號： T8403 

品牌： Triconex

產(chǎn)品詳情資料：

數(shù)模轉(zhuǎn)換器（DAC）板內(nèi)存映射在短I/O地址空間中。該板在65535字節(jié)的VME短I/O地址空間中占據(jù)16個(gè)連續(xù)的字位置。短I/O空間位于FF0000 HEX到FFFFFF HEX之間。由于DAC輸出分辨率為12位，因此每個(gè)寫入或讀取周期是一個(gè)字傳輸?shù)脚紨?shù)地址。板基址（XXXXX 0 HEX）可由DIP開關(guān)選擇，如第5.5節(jié)所示。圖4.1-1表示VMIVME-4100地址圖，假設(shè)工廠設(shè)置的基址為FF0000 HEX。請注意，控制狀態(tài)寄存器（CSR）可以寫入電路板占用的任何16個(gè)字的位置，也可以從中讀取。當(dāng)寫入電路板時(shí)，數(shù)據(jù)的目的地由數(shù)據(jù)位15控制。如果數(shù)據(jù)位15是“一”，則字被寫入控制寄存器；然而，當(dāng)數(shù)據(jù)位15為“零”時(shí)，數(shù)據(jù)被寫入被尋址的DAC。讀取板上的任何地址都會返回板的狀態(tài)。有兩種類型的寄存器寫入才能使DAC板正常運(yùn)行。一個(gè)是CSR，另一個(gè)是DAC。根據(jù)DAC通道啟動(dòng)轉(zhuǎn)換所需的操作模式，它們的寫入順序可能不同。

產(chǎn)品英文詳情資料：

The Digital-to-Analog Converter (DAC) Board is memory mapped in the short I/O address space. The board occupies 16 successive word locations in the VME short I/O address space of 65,535 bytes. The short I/O space is located from FF0000 HEX to FFFFFF HEX. Each write or read cycle must be a word transfer to an even address, due to the DAC output resolution of 12 bits. The board base address (XXXXX0 HEX) may be selected by DIP switches, as shown in Section 5.5. Figure 4.1-1 represents the VMIVME-4100 address map, assuming the factory set base address of FF0000 HEX. Note that the Control Status Register (CSR) can be written to and read from any of the 16 word locations that the board occupies. When the board is written to, the destination of the data is controlled by data bit 15. If data bit 15 is a "one", the word is written to the control register; whereas, when data bit 15 is a "zero", the data is written to the DAC which is addressed. Reading any address on the board will return the status of the board.There are two types of registers that must be written to for proper operation of the DAC Board. One is the CSR, the other is the DACs. The order in which they are written to may differ, depending on the desired mode of operation for DAC channel start convert.

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