NI-9505
NI-9505
NI-9505
PROFINET IO通讯使用RT的实时通讯等级，可以满足大部分的工厂自动化的应用。PROFINET IO通讯还可以使用IRT的等时实时通讯方式，主要用于运动控制应用。IRT等时实时通讯又分为两种，一种是IRT High flexibility（高度灵活性），另外一种是IRT Top performance（顶级性能），其中IRT High flexibility应用介于工厂自动化和运动控制之间，既可以保证数据的实时通讯，也可以保证具有足够的确定性。当工业控制出现下列要求时，可以使用IRT High flexibility。
1，用于I/O用户数据通讯（生产数据）的大量结构所要求的极高性能和确定性。
2，用于I/O用户数据通讯（生产数据）的线性总线拓扑中许多节点所要求的极高性能。
3，通过电缆进行的生产数据和大量TCP/IP数据的并行传输。
and other intelligent devices.
The communication among process station, operator station and engineer station is realized through the system bus diginets (Industrial Ethernet). user
Different transmission media (RJ45 twisted pair, thin cable, thick cable or optical fiber cable and mixed media) and network topology can be selected for the system bus
Due to the adoption of tcp/ip protocol, the system can also realize ultra long distance communication with the help of public telephone network (dial-up mode) or satellite.
PLC and other subsystems communicate with industrial “system through Modbus protocol interface. The sys
tem also supports iec870-5 over control coordination
Discussion.
The flash EPROM inside PS provides more than 220 function modules (control algorithm subroutines), in addition to the base specified in IEC 61131 3 standard
In addition to this content, many powerful and strictly
