FOXBORO福克斯波罗 P92/P9220436070H 欧美进口备件触点输入模块

FOXBORO福克斯波罗 P92/P9220436070H 欧美进口备件触点输入模块

FOXBOROP92入装置的状态和数据，并分别存入IO映像区，然后从用户程序存储器中逐条读取用户程序，经过命令解释后，按指令的规定将逻辑或算术运算的结果送入Vo映像区或数据寄存器内。

等所有的用户程序执行完毕之后，后将1/O映像区的各输出状态或输出寄存器内的数据传送到相应的输出装置，如此循环运行，直到停止运行为止。

为了进一步提高PLC的可靠性，近年来对大型PLC还采用双CPU构成冗余系统，或采用三CPU的表决式系统。这样，即使某个CPU出现故障，整个系统仍能正常运行。

FOXBOROP92 into the device status and data, and respectively stored in the IO image area, and then read the user program from the user program memory, after command interpretation, according to the instructions to the logic or arithmetic operation results into the Vo image area or data register.

After the execution of all the user programs, the output state or output register data in the 1/O image area is transmitted to the corresponding output device, so the cycle runs until it stops running.

In order to further improve the reliability of the PLC, in recent years, the large PLC has also adopted a redundant system with double cpus, or a three-CPU voting system. In this way, even if one CPU fails, the whole system can still run normally.