5SHX2645L0004 3BHB003154R0101 5SXE03-0141 3BHB003149P104

5SHX2645L0004 3BHB003154R0101 5SXE03-0141 3BHB003149P104 is the highest level of the whole system, which has the highest degree of intelligence, performs the intelligence of organizational management decisions, and directs and monitors downwards. This level performs the function of management decision making to the upper level through friendly human-computer dialog with managers through human-computer interface. Downwardly it monitors and guides all behaviors of the coordination level. Its degree of intelligence is the highest, but the precision is not high, and it is desirable to be coarse rather than fine, in order to carry out macro-guidance. This level can also be based on the actual production process and the environment and other information, the use of man-machine combination of automatic or semi-automatic way to put forward reasonable control objectives or indicators, the formation of the corresponding orders or tasks to the lower levels. This part is usually accomplished by high-function computers.

5SHX2645L0004 3BHB003154R0101 5SXE03-0141 3BHB003149P104 coordinates the operation of the lower PLCs according to the commands from the organization level, avoids the conflict of the lower PLCs, and transmits the information from the lower PLCs to the upper computer. The monitoring/coordinating machine can be either an industrial control computer or a main PLC or PLC terminal, depending on the control requirements.

5SHX2645L0004 3BHB003154R0101 5SXE03-0141 3BHB003149P104 is the lowest level of the control system, performs field control functions, and is the key level of control in an automatic control system. The intelligence of this level is the lowest, but the reliability, control accuracy and real-time requirements are the highest, thus PLC is exactly the best choice. At the same time, this level of PLC can be connected to the upper monitoring and coordination level through the field bus for real-time online control and coordination. Fieldbus technology generally adopts a collapsed structure and uses the low-level protocols of the Open System Interconnection (OSI) reference model, resulting in a simple structure and high real-time performance.