Safety Basics – Conventional vs Combined Safety

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. […]

Process Automation Background

 History The “Process Industry” includes the waste water treatment, food & beverage, chemical, oil & gas, and pulp & paper industries. In the past, plant operators had to physically monitor performance values and the quality of outputs to determine the best settings on which to run production equipment. Process automation simplified this with the help of sensors at thousands of spots around […]

PROFINET Proxies and Gateways

Fieldbus solutions have been in place for decades in most industries, and there’s an incredible amount of knowledge built up around them.  Everything from PROFIBUS to DeviceNet, from 4-20 loops to MODBUS RTU… engineers just graduating with their B.S. degrees were born after most of these automation systems were developed! Migrating these solutions to PROFINET is a common challenge.  Every […]

Project Planning

Planning a development roadmap for a PROFINET project is critical for a smooth process and on-time product release.  There are four basic steps (and partners) you’ll need to work with to complete the project.  The first and last, joining PI and applying for a product certificate, are pretty straightforward transactions.  Everything in between is where the interesting stuff happens and […]

PROFINET Development: First Steps

We need to put PROFINET on our device.  Where do we start? This is a question we field nearly every week, and this section gives you the background, resources, and contacts to get up and moving with your PROFINET project. There are a lot of resources out there explaining the process of developing a PROFINET product.  In addition to PROFINET […]

The PROFINET Certification Process

PROFINET certification can be an intimidating process, but it doesn’t have to be.  Knowing what you’re getting into before you complete the test application not only sets expectations, but it also puts you in a position to streamline the process. Step 1: Choose a Test Lab PI Test Labs operate as independent and accredited institutions. They aren’t part of the […]