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Understanding what Profibus Cable and Profibus Connectors entail
Profibus (Process Fieldbus) is an international fieldbus communications standard for linking process control and plant automation modules. Instead of running individual cables from a main controller to each sensor and actuator, a single multi-drop cable is used to connect all devices, with high speed, bi-directional, serial messaging used for transfers of information. A Profibus cable and Profibus connectors are widely described as the world’s leading fieldbus cable and connectors. Profibus is thus basically a standard for fieldbus communication in automation technology; an industrial control network used for factory automation, process control, motion control, and safety networks. A Profibus cable and Profibus connectors produce significant cost savings regarding design, installation, and maintenance expenses.
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Origin of Profibus Cable and Profibus Connectors
Profibus cable and Profibus connectors owe their existence to the need to implement and spread the use of a bit-serial fieldbus based on the basic requirements of the field device interfaces. First, the complex communication protocol Profibus FMS (Fieldbus Message Specification) was specified. Later on, the specification for the simpler and thus considerably faster protocol Profibus DP (Decentralized Peripherals) was completed. It replaced FMS.
Benefits of using a Profibus Cable and Profibus Connectors
Using a Profibus cable and Profibus connectors offer huge savings on cabling costs when compared with older methods. Profibus cable and Profibus connectors allow for simple linking of devices from many different vendors and can even reduce installation, commissioning, fault-finding, and associated plant downtime costs.
Characteristics of Profibus Cable and Profibus Connectors
Some characteristics associated with a Profibus cable and Profibus connectors include reducing operating costs, increasing productivity, decreasing time to market for new products, and improving product quality. Unlike a standard fieldbus cable and connectors, a Profibus cable and Profibus connectors can support up to 32 devices per segment, which means up to a total of 126 devices, depending on total system current.
Basic Tips regarding the installation of Profibus Cable and Profibus Connectors
- Always use a Profibus cable and Profibus connectors;
- Do not exceed 32 devices per segment (including repeaters, OLMs and couplers);
- Ensure the segment length is in contrast with the baud rate;
- Ensure every segment has powered termination on both ends;
- Avoid spur lines;
- Avoid swapping the wires (A=green, B=red); and
- Mark how long the cables really are and update the drawings.
After installation you should test your work:
- Are the addresses correctly set?
- No short circuit or break in the cable?
- Are you able to communicate with the devices?