现场过程控制器PS.操作站0s及工程师站ES之间的数据通讯由系统网络(DigiNetS) 完成，插
在PS基本单元上的第- Ethernet网卡提供PS与DigiNetS的接口。ES. 上组态好的硬件配置及PS用
户程序即通过DigiNetS和第一-网卡 下载至PS CPU 中，在新安装或更换现场总线接口卡后，所需的组
态信息会自动重新加载。
Industrial” system through the ModBus protocol interface. The system also supports IEC870-5 over-control protocol.
discussion.
The Flash EPROM inside the PS provides more than 220 functional modules (control algorithm subroutines), in addition to the basic ones specified in the IEC 61131 3 standard
In addition to this content, many powerful and rigorously tested function blocks from actual engineering applications have been expanded. any complex control
The scheme can be realized by the combination of these function blocks.
The function blocks provided by the system mainly include the following 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”
