This company has improved its fault-tolerant Simatic S7-400H high-performance controllers and equipped them with new functions. In addition, the range of controllers has been extended with the new CPU 416-5H. All CPUs now have a Profinet interface with a two-port switch, larger memory and an expanded quantity structure for data and function block as well as function calls. One of the new functions concerns the master-reserve switchover that can now be programmed by the user. The Profinet interface with a two-port switch is used for plant communication and supports fault-tolerant H-connections via TCP/IP (ISO on TCP). In combination with the integrated MPI/DP and Profibus DP interfaces, the new Profinet interface permits the system-redundant connection of I/O devices. — Siemens Industry Sector, Industry Automation Div., Nuremberg, Germany