产品标题： WR-D4004伺服电机说明书在线阅读
型号：WR-D4004
质保：七天验收期，质保期一年
品牌：AB
产品图片展示
产品详情资料：
过时的数据存储在DAC寄存器中，并通过在CSR的写入周期中设置适当的位进行转换。CSR必须写入与先前加载的DAC通道相同的地址。区别在于，数据位D15在写入DAC信道寄存器时必须为“零”，在写入CSR时必须为一个“一”。数据位D09在写入CSR时为“一”，启动之前存储的12位字的模拟转换。VMIVME-4100 DAC板的MC68000汇编语言编程只有少数汇编语言语句才能正确控制和使用DAC板。假设本例中电路板的基址为FF0060H。电路板地址可通过第4.1和5.5节中给出的信息确定。***个例子是所有16个DAC的满标度值为FFFH的负载，通过P3连接器提供9.9951伏的模拟输出。DAC输出值将在写入后立即更新。这是第4.1.2节中解释的即时DAC更新模式。以下程序仅用作指导示例，在用户应用中可能没有用处。为了启用DAC即时更新模式，必须采用第5.7节中给出的跳线配置。此示例的流程图如图4.5-1所示，汇编语言程序如图4.5-2所示。
产品英文详情资料：
dated. The data is stored in the DAC register and will be converted by setting the proper bits in a write cycle to the CSR. The CSR must be written to at the same address as that of the DAC channel that has previously been loaded. The difference being that data bit D15 must be a "zero" when writing to the DAC channel register and a "one" when writing to the CSR. Data bit D09, when written as "one" to the CSR, initiates the analog conversion of the previously stored 12-bit word.MC68000 ASSEMBLY LANGUAGE PROGRAMMING OF THE VMIVME-4100 DAC BOARD Only a few assembly language statements are necessary to properly control and utilize the DAC board. It will be assumed that the base address of the board in this example is FF0060H. The board address can be determined by information given in Sections 4.1 and 5.5. The first example will be the loading of all the 16 DACs with a full scale value of FFFH, giving an analog output over the P3 connector of 9.9951 volts. The DAC output value will be updated immediately upon being written to. This is the immediate DAC update mode explained in Section 4.1.2. The following program is intended as an instructional example only and may not be useful in the user’s application. To enable the DAC immediate update mode, the jumper configuration given in Section 5.7 must be employed. A flow chart of this example is shown in Figure 4.5-1, and the assembly language program is shown in Figure 4.5-2.
