Standard hardware and software are critical for efficient and economical systems. Andrew J. Smith Brian Van Batavia As the mobile-equipment industry evolves toward more-sophisticated systems, it is integrating more electronics with traditional hydraulics to address customer demands for higher performance and greater efficiency. The trend of increasing electronic content in mobile applications has been apparent for years, but initial adoption has been somewhat slower than one would expect. Two issues that may have kept electronics from becoming more mainstream until now were uncertainty over standards (or lack of standards), and whether an open or proprietary control architecture approach is best. Open architecture and predefined industry standards are two keys to successful electrohydraulics. And this holds for both software and hardware. It lets engineers choose from a wider range of components when designing machines, and helps ensure interoperability of different components as a system. The first step is a standardized approach to software development, as well as one robust enough to address different application, systems, and user preferences. Eaton engineers recently demonstrated the value of this approach in redesigning a mobile-logging trailer, used to pick up and load timbers for transport. For instance, the IEC 61131-3 programming standard does both, and is becoming increasingly prevalent in mobile applications. The standard defines common data structures and programming methods that let engineers collaborate on software development. For instance, it provides five graphical and textual languages for programmers to choose from. The choice of languages helps when engineers come from different backgrounds. Someone with industrial experience might use ladder diagram, while a software engineer who knows C programming may prefer structured text. IEC 61131-3-compliant programs are completely scalable and can be updated or enhanced as cirneeded. The standard approach also helps programmers create high-quality code with fewer defects, as the programming system itself alerts the user
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Programming languages provide the commands, grammar and syntax for instructing digital devices and computers to perform specific tasks.
Programmable Logic Controllers (PLC)
Programmable logic controllers (PLC) are the control hubs for a wide variety of automated systems and processes. They use a wide variety of inputs and outputs and provide network capability.
Communications and network software is used for the setup and management of digital communication networks such as LAN and WAN computer networks, electronic mail, FAX, audio and video networks, wireless communication systems, etc.
Topics of Interest
Producing a programming station that provides all the software management, the graphical and textual editors, the build system and run-time diagnostics required for programming IEC 1131-3...
Motion control was once performed exclusively through tedious and painstaking low-level code-based programming of hardware devices; but, modern machine automation hardware and software greatly...
This Appendix outlines the common elements used in IEC 61499 that are based on definitions from the IEC 61131-3 PLC Software Standard. This appendix is provided as a brief overview the formal...
Standardized programming for automation equipment is here to stay. At the forefront is IEC 61131-3-compatible software, which generates standardized code for use on any number of controls.
Electrically erasable read only memory
Function Block Diagram graphical language