HIMA K9203A 996920360 输出模块

HIMA K9203A 996920360  输出模块

HIMA K9203A 996920360  输出模块

数据缓冲:由于I/0设备的速率较低而CPU和内存的速率却很高，故在控制器中必须设置一缓冲器。在输出时，用此缓冲器暂存由主机高速传来的数据，然后才以1/0设备所具有的速率将缓冲器中的数据传送给1/0设备:在输入时，缓冲器则用于暂存从//0设备送来的数据，待接收到一批数据后，再将缓冲器中的数据高速地传送给主机。差错控制:设备控制器还兼管对由1/0设备传送来的数据进行差错检测。若发现传送中出现了错误，通常是将差错检测码置位，并向CPU报告，于是CPU将本次传送来的数据作废并重新进行一次传送。这样便可保证数据输入的正确性

数据交换·这是指实现CPU与控制器之间、控制器与设备之间的数据交换。对于前者,是通过数据总线，由CPU并行地把数据写入控制器，或从控制器中并行地读出数据:对于后者，是设备将数据输入到控制器，或从控制器传送给设备。为此，在控制器中须设置数据寄存器

德国HIMA公司创建于1908年，是*有名#控制系统*制造商。自1970年HIMA公司生产出*上套TUV认证的故障型控制系统HIMA-Planar-System起，HIMA公司一直处于**控制领域的***前沿，致力于**控制系统技术和产品的

HIMA K9203A 996920360  输出模块

HIMA K9203A 996920360 Output module

Data buffering: Because the I/0 device speed is low and the CPU and memory speed is high, a buffer must be set in the controller. In the output, the buffer is used to temporarily store the data from the host at high speed, and then the data in the buffer is transmitted to the 1/0 device at the rate of the 1/0 device: in the input, the buffer is used to temporarily store the data from the //0 device, and after receiving a batch of data, the data in the buffer is transmitted to the host at high speed. Error control: The device controller is also responsible for error detection of data transmitted by the 1/0 device. If an error is found in the transmission, the error detection code is usually set and reported to the CPU, so the CPU will scrap the data sent this time and retry the transmission. This ensures the correctness of data input

Data exchange · This refers to the realization of data exchange between the CPU and the controller, and between the controller and the device. In the former case, data is written to or read from the controller in parallel by the CPU through the data bus; in the latter case, the device inputs data to the controller or transfers data from the controller to the device. For this purpose, a data register must be set up in the controller

The German HIMA company was founded in 1908, is the most famous # control system * manufacturer. Since 1970 HIMA company produced the first TUV certified fault control System HiMA-Planar system, HIMA company has been in the forefront of the field of control, committed to the best control system technology and products

HIMA K9203A 996920360 Output module

HIMA K9203A 996920360  输出模块