BECKHOFF CX1100-000x User Manual
Page 30
Product overview
28
Embedded PC
Architecture of power supply CX1100-0002
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
These functions are managed by the control program via the PC104 bus. The structure of the CX1100-0002 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. The access to the bus is managed by a 4 KB dual-ported-RAM (DPRAM). A
microcontroller (80C165) manages the data transfer to the k-bus. The DPRAM is accessed by the CPU (via PC104
bus) and the microcontroller. The following figure shows the memory setup of the DPRAM: