The SINUMERIK PCU 321 is a powerful computer unit without a hard disk or fan of the same design as the SIMATIC S7-300, allowing simple installation on an S7 sectional rail.
Five Ethernet ports are available on-board as communication interfaces: 2 of these are standard Ethernet interfaces, 3 are PROFINET interfaces. Two additional USB interfaces are provided on the front for connecting I/O devices.
The SINUMERIK PCU 321 is optimally prepared for application of an operating system on CF card. The SINUMERIK HMI sl and HMI PRO sl RT operating software packages can be ordered additionally to create a functional system.
In combination with the SINUMERIK PCU 321, therefore, the SINUMERIK HMI sl and HMI PRO sl RT user interfaces and the SINUMERIK operator components are also available for machines with pure SIMATIC control.