Technical note: 21 6BM61 b HESG448267R1021 Module bus connection cable focuses on the system set
Into and systems engineering and other aspects.
PROFIBUS is an open digital communication system with a wide range of applications, which is a major breakthrough in the transfer of centralized automation system to decentralized automation system.
In PROFIBUS- directly focuses on the system integration and system I process and other aspects, is focused on the research and development of application rules, so that the bus is suitable for fast, time-demanding applications and complex
The characteristics of various communication tasks make it the only fieldbus that can fully cover plant automation and process automation applications, especially in the field of plant automation and process automation. So from birth to
Today, PROFIBUS has been the international market leader in the field of fieldbus technology.
With the large number of applications of PROFIBUS, many users began to contact and use fieldbus. Due to the user's different understanding of fieldbus technology, coupled with the complex site construction situation, it is very difficult
There may be some hidden dangers in the fieldbus communication of many projects, which, if not discovered and dealt with in time, may lead to communication failures in the system, thus affecting the normal operation of the entire system
Run.
The essence of PROFIBUS network communication is RS485 series C] communication, according to different industry applications, there are three kinds of communication rules: DP (Decentralized Peripherals), FMS (Field
Message Specification) and Process Automation (PA) rules.
First, the correct connection method of PROFIBUS-DP line is popularized
The correct connection is as follows, without explanation, just look at the picture. PROFIBUS cable is very simple, there are only two wires inside, a red one and a green one, and then there is a shielding layer on the outside. Wiring time
Wait, to connect the shielding layer, can not contact with the wire inside. To be clear into the line and which are, if it is a string, is a bus down, the middle constantly access points
Stand, this is a very common method. The two connectors at the two ends of the bus should be connected to the hole in the hole, not the hole out, and then the two connectors at the two ends should put their switches
In the ON state, only the incoming connection is open, and the outgoing connection is broken. The connectors in the middle of the period are set to OFF, and both of their entrances and exits are connected (memory
Method: ON indicates the resistance of the access terminal, so the connectors at both ends are switched to ON; OFF indicates that the terminal resistance is disconnected, so the middle connector should be turned OFF).
The 216BM61B is a differential expansion module manufactured by ABB for measuring and controlling differential expansion in various industrial automation equipment. Differential expansion is an important parameter to measure the relative expansion or contraction between two components in the equipment, which is of great significance for the stable operation and safety of the equipment.
The 216BM61B module has the following features:
High precision measurement: The use of advanced sensors and measurement technology can measure the differential expansion value with high precision to ensure the stable operation of the equipment.
Wide adaptability: suitable for a variety of different industrial automation equipment and process flow, can meet a variety of different differential expansion measurement and control needs.
Easy integration: The module has standard interfaces and protocols, and is easy to integrate with various industrial automation control systems to achieve remote monitoring and control.
High reliability: The use of high-quality materials and manufacturing processes, with high reliability and long life, can work stably in harsh environments.
