The PLC controllers PSSuniversal are a part of the automation system PSS 4000, and they are available for simple and sophisticated automation projects. http://www.pilz.com
With the PLC controllers we offer control systems that enable you to control both automation and safety functions within a project. Our PLC control systems are modular, i.e. you can put them together to suit your requirement. To do this, various head modules (with the main processor) and numerous I/O modules for safety and automation functions are available. You can simply adapt the system structure to suit your requirements. You can add or exchange the modules at will. http://www.pilz.com