BECKHOFF CX1100-000x - Manual (Page 36)

Product overview
34 Embedded PC
Architecture of power supply CX1100-0003
This power supply features, except for power supply, the following functions:
1. Display 2 x 16 characters
2. 4+1 navigation switch
3. Non Volatile RAM
4. K-bus connections
5. IP-Link bus connection
These functions are managed by the control program via the PC104 bus. The structure of the CX1100-0003 is shown
in the following figure:
This power supply unit features the basic functions. These functions are described in the architecture overview.
Further the k-bus is supported. This interface is described in the architecture of the CX1100-0002 unit. This unit also
features the access to the IP-Link bus. A fiber optics ring can be connected to the power supply The access is
realized by a 4 KB dual-ported RAM. A microcontroller (80C165) manages the data transfer to the IP-Link-bus. The
DPRAM is accessed by the CPU (via PC104 bus) and the microcontroller. The following figure shows the memory
setup of the DPRAM: