5．熟悉FX系列PLC之间、PLC与计算机和变频器之间的数据链接通信和无协议通信的编程方法。
6．编写模拟量处理程序和PID控制程序、PID参数整定的方法和实验方法。
PLC的仿真软件GX Simulator为解决这一难题提供了很好的途径。仿真软件用来模拟PLC的操作系统和用户程序的运行。与硬件PLC一样，需要将用户程序和组态信息下载到仿真PLC，用键盘和鼠标给计算机屏幕上的仿真PLC提供输入信号，观察仿真PLC执行用户程序后输出信号的状态。
GX Simulator是与编程软件GX Developer配套的仿真软件。它的功能强大、使用方便，支持FX系列绝大部分指令，其功能超过了很多与FX兼容的国产硬件PLC。可以用GX Simulator在计算机上做仿真实验，模拟硬件PLC的运行，执行用户程序。读者在入门阶段完全可以用仿真软件代替硬件PLC来模拟调试程序，仿真实验和做硬件实验时观察到的现象几乎完全一样。
categories:
o
Analog processing
o
digital processing
loop regulation
Logical sequence control
c
logic operation
Monitoring function
Collection function.
c
arithmetic operations
c
TCP/IP protocol communication interface
Modbus protocol communication interface
1EC870-5 protocol communication interface (Telecontrol)
4.2 Field Controller PS
Industrial” field controller PS is a special process control station, which is embedded with field bus communication interface for users to use
Fieldbus technology offers very flexible options. Each PS allows to insert 4 fieldbus interface cards (the card type can be different),
Each card is connected to 1 field bus to collect process data and diagnostic information from the bus, the interface card is easy to replace and plug and play
(Plug & Play), and can be plugged and unplugged.
The field controller PS has
