PLC模拟量输出模块 HONEYWELL 05704-A-0146

PLC模拟量输出模块 HONEYWELL 05704-A-0146

PLC模拟量输出模块 HONEYWELL 05704-A-0146

PLC的处理器(CPU一般由控制器、运算器和寄存器组成，这些电路都集成在一个芯片内。CPU通过数据总线、地址总线和控制总线与存储单元、输入/输出接口电路相连接。

与一般的计算机一样，CPU是整个PLC的控制中枢，它按PLC中系统程序赋予的功能指挥PLC有条不紊的进行工作。CPU主要完成下述工作:

(1)接收、存储用户通过编程器等输入设备输入的程序和数据。

(2)用扫描的方式通过I/O部件接收现场信号的状态或数据，并存入输入映像寄存器或数据存储器中。

(3)诊断PLC内部电路的工作故障和编程中的语法错误等。

PLC模拟量输出模块 HONEYWELL 05704-A-0146

The CPU is generally composed of a controller, an arithmetic and a register, and these circuits are integrated in a chip. The CPU is connected to the storage unit and the input/output interface circuit through the data bus, address bus and control bus.

Like the general computer, the CPU is the control center of the whole PLC, and it directs the PLC to work methodically according to the function given by the system program in the PLC. The CPU mainly completes the following tasks:

(1) Receive and store programs and data input by users through input devices such as programmers.

(2) The status or data of the field signal is received by scanning through the I/O component and stored in the input image register or data memory.

(3) Diagnose the working faults of PLC internal circuits and grammar errors in programming.