The control action of CPU in field control unit is illustrated in detail.
对现场控制单元CPU控制作用进行详细的说明。
The middle layer is composed of the field control unit device PLC with Ethernet interfaces.
中间层由带以太网接口的现场控制单元设备PLC组成；
On the basis of modeling, simulation and field test, proposed are the PID parameter setting range of the governor under the large grid operating condition, and the power control mode of the unit.
通过建模、仿真及现场试验，提出了机组并联于大电网工况下的调速器PID参数整定范围和应有的机组功率控制模式。
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