NI SCXI-1102B 32通道热电偶放大器模块 SCXI1102B /C

NI SCXI-1102B 32通道热电偶放大器模块 SCXI1102B /C

NI SCXI-1102B与外部设备的数据交换速度高速化。PLC的模块通过系统总线〈一般做在基板的印刷电路上)与装插在基板上的各种IO模块、特殊功能模块、通

信模块等交换数据，装插的模块越多，模块与那些模块之间的数据交换的时间就会增加。

NI SCXI-1102B这种数据交换的时间的增加，在一定程度上会使PLC的扫描时间加长。因此，有必要采取以下措施使系统总线传输速度高速化∶增加系统总线的带宽使一次传输的数据量增多

例如三菱电机的小Q系列PLC，增加了系统总线的带宽，使所传输的数据量是以前的2倍﹔在系统总线存取的方式上，采用连续成组传送技术实现连续数据的高速批量传送，大大缩短了存取每个字所需的时间;

通过向与系统总线相连接的模块实现全局传送，即针对多个模块同时传送同一数据，有效地用活了系统总线。

NI SCXI-1102B has high data exchange speed with external devices. The PLC module through the system bus < generally done on the printed circuit of the substrate) and installed on the substrate of various IO modules, special function modules, through

The more modules are inserted, the more time the data exchange between the modules and those modules will increase.

NI SCXI-1102B This increase in data exchange time, to a certain extent, will make the PLC scan time longer. Therefore, it is necessary to take the following measures to make the system bus transmission speed: increase the bandwidth of the system bus to increase the amount of data transmitted at a time

For example, Mitsubishi Electric's small Q series PLC increases the bandwidth of the system bus, so that the amount of data transmitted is twice that of the previous; In the system bus access mode, the continuous group transmission technology is used to realize the high-speed batch transmission of continuous data, which greatly reduces the time required to access each word.

Through the global transmission to the module connected with the system bus, that is, the same data is transmitted to multiple modules at the same time, and the system bus is effectively used.