With two new signal modules for simple temperature measurement and control applications, Siemens Industry Automation Division has expanded its Simatic S7-1200 compact controller family. The RTD (Resistance Temperature Detector) and the TC (Thermocouple) signal modules each offer four input channels and are provided in compact 45 mm wide housings. Together with the PID (Proportional-Integral-Differential) Function Blocks integrated within the Simatic Step 7 Basic engineering system, temperature control or other closed-loop control applications are easily configured. Furthermore, to simplify the startup and commissioning of these applications, a PID commissioning control panel is provided, which automatically computes the optimum tuning values. This control panel also offers manual control capabilities and a graphical trend view of the process.