PROFINET University provides lessons about PROFINET. And PROFINET is a communications technology that helps manufacturers make things. Those things may be discrete things like cars or phones, continuously produced things like gasoline or safe drinking water, or batch things like a batch of pills or potato chips. Manufacturers use automation to ensure consistent, high-quality products.
Industrial automation continues to evolve along with the networks that support it. The newest trends are more than buzzwords: Industrie 4.0 and Industrial Internet of Things. These or similar concepts go by different names in different countries. Here is a brief look back at the evolution followed by the impact and relationship of these new concepts.
When we introduced the lesson on the evolution of buses in Automation Evolutionary Trends we showed control connectivity evolving from manual to pneumatic to 4-20mA to fieldbus to Industrial Ethernet. Each step improved manufacturers’ ability to install, commission, operate, and maintain their production lines. The step to fieldbuses provided the benefits of reduced wiring, additional information, and faster diagnostics. It […]
PROFINET is a mechanism to exchange data between controllers and devices. Controllers could be PLCs, DCSs, or PACs (Programmable Logic Controllers, Distributed Control Systems, or Programmable Automation Controllers.). Devices could be I/O blocks, vision systems, RFID readers, drives, process instruments, proxies, or even other controllers. Fast and Deterministic PROFINET exchanges data quickly and deterministically. Required speeds vary depending on the […]
What is a GSD File? A PROFINET General Station Description (GSD) file is a description of an IO device provided by the device manufacturer. The contents of the GSD consists of configuration information, parameters, modules, diagnostic and alarms, and vendor and device identification. To discuss the latter two in a little more detail, the vendor identification (vendor ID) is a number […]
It should come as no surprise that PROFINET also supports motion control applications with drives and motors (sometimes also referred to as VFDs – Variable Frequency Drives) as these are used in most modern automation systems. Motion control support comes with PROFINET technology from three main aspects: 1.) The ability for scalable real-time control depending on the drive application 2.) […]
Unlike other competitor networks, all PROFINET devices support Link Layer Discovery Protocol (LLDP) which is defined in IEEE standard 802.1AB. There are multiple reasons for LLDP support. The first is to be able to discover, check, and maintain the topology of the PROFINET network and obtain diagnostics if something changes. The second is for easy device commissioning when setting up […]
What’s the MAC address of the device you are viewing this from? The IP Address? What’s your name? The easiest of all those to remember is your name, mine is PNC for short. PROFINET device names are used for the same reasons.
An oft-heard question: “Why do PROFINET devices need IP addresses? PROFINET uses names!” You may have heard the misinformation that PROFINET does not use TCP/IP. The correct information is that it in fact does.
So, the short answer to that oft-heard question: PROFINET uses TCP/IP and therefore needs an IP address.
Machine Safety Machine Safety is the protection of personnel or plant assets from damage or death. Components of machine safety include: Organizational safety (Requirements for safety shoes, FRC, safety glasses, etc.) Passive Safety (guard rails, covers for moving parts, gates) Functional Safety (Protection from hazards due to incorrect functioning of the industrial machinery) Functional Safety This article will focus on Functional Safety for the factory automation environment. Common components […]
Safety PLCs are special controllers built and certified to meet international safety requirements such as NFPA 79, IEC 62061, IEC 13849-1 or IEC 61508. All of these safety standards define levels of risk reduction. Conventional Safety PLC Principle The original safety PLC concept required that normal PLCs and standard I/O could not be mixed with safety PLCs and safety components in the same network. […]
Hazardous environments are areas where flammable liquids, gases or vapors or combustible dust exist in sufficient quantities to produce an explosion or fire. In hazardous environments, specially designed equipment and special installation techniques must be used to protect against the explosive and flammable potential of these substances. (OSHA Publication 3073) There are three factors which have to be present in order for there to […]