Programmable Logic Controllers

The modular DIN-Rail PC by eac can be used to construct a controller on a DIN rail by the combination of a PC module with several i/o modules. Interfaces to several fieldbusses and a free-of-cost PLC software based on IEC-61131-3 are available.

Decentral programmable controller from Fränz & Jaeger. They also have a Linux distribution for the PLD and a graphical development environment according to IEC1131.

Industrial PC with 68 digital and analogue process I/Os by AuTech with SofCoS (SPS software) and 4vis for browser based visualisation and operation. A graphical programming environment according to IEC-1131 is available.

The VersaTRAK IPm is a Remote Terminal Unit, powerd by open Linux software.

Autronix has Linux based PLCs and motion controllers.

Soft PLC with IEC1131 interface.

Soft PLD (programmed in pascal). The project is licensed under the GPL and supports the DIL/Net-PC by SSV.

Community project to develop a linux based control system. At the moment the basic infrastructure is in place.

Soft PLC from Ingenieurbüro Betz. A graphical development environment called CORYO is available which generates IEC 1131-3 compatible code.

The LPC (Linux Programmable Controller) is currently being developed to allow a PC running Linux to act as a Programmable Logic Controller. The system supports it's own mnemonics that allow implementation of ladder logic programming techniques. There are also efforts to develop support for compiled IEC 61131-3 programming languages. The current implementation supports DAQ cards, serial ports, TCP/IP networking, and Java tools for remote administration, programming and HMIs. Soon to be added are Devicenet, real time features, and dynamically loadable modules. The project is expected to be ready for alpha testing in late February 2001, but the GPL source code can be downloaded now.

automationX supplies a soft PLC as a part of it's product having the same name. It is possible to programm the PLC with a graphical system according to IEC1131-3. Due to it's integration in a complete automation environment other components such as databases (ODBC) or image processing facilities are programmable the same way. The system is scalable from a few up to several thousand data points. Multi server environments are supported as well.

A Project for development of a soft SPS on Linux.

This software reads data from an Simatic S5/S7 PLC over a serial line to a Linux or BSD PC and offers it to a local network.

Manufacturer of CNC machines and controllers based on RT Linux.