The Bytronic PLCSF range consists of a mounting frame and PLC combination based around a Siemens S7-200. The Simatic S7-200 family of programmable controllers are a compact and powerful micro PLC solution for automation tasks. They are also easily expandable with various digital and analogue modules available. The S7-200 communication port connects to a PC allowing the CPU to be programmed using Siemens STEP7 Micro/WIN32 software. The mounting frame gives easy access to the PLCs I/O capabilities providing an effective means for the student to test and debug their program prior to connecting to the application.