BECKHOFF CX1100-000x - Manual (Page 9)

Product overview
Embedded PC 7
CX1100-000x
power supply units and I/O interfaces
One of four power supply modules can be selected for a CX10x0 system. The power supply of all other system
components is ensured via the internal PC104 bus; no separate supply lines are required. However, the CX1100
components offer further important characteristics that go beyond a pure power supply: an integrated NOVRAM
enables the fail-safe storage of process data, an LCD display with two lines of 16 characters each is used for
displaying system and user messages. Local I/O signals are connected via the CX1100-0002 power supply variant,
to which all Beckhoff Bus Terminals can be connected, or via CX1100-0003, which in addition to the Bus Terminals
enables the connection of Extension Box IExxxx type Beckhoff Fieldbus Box modules. The option to connect Bus
Terminals or Fieldbus Box modules creates a control system with a very variable, expandable I/O level with large
signal variety. The I/O data are stored in a DPRAM, which is accessible by the CPU via the system bus. The power
supplies of the CX system can be changed in the field: If, for example, local I/O via Bus Terminals is required,
CX1100-0001 can be replaced with CX1100-0002 in the field. Local I/O signals are connected via the CX1020 and
the CX1100-0002 power supply variants (Bus Terminals), CX1100-0003 (Bus Terminals
and Fieldbus Box modules via IP-Link) or CX1100-0004 for EtherCAT Terminals. With CX1100-0004 the I/O data are
stored directly in the main memory of the CPU; a DPRAM is no longer required. The CX1100-0004 power supply unit
for EtherCAT Terminals can only be connected in conjunction with the basic CX1020 CPU module.
The technical data are as follows:
 CX1100-0001
 CX1100-0002
 CX1100-0003
 CX1100-0004
An overview about architecture with the common system components GCB, ACB, NOVRAM, Display und Taster are
described together in one chapter. Special interfaces are described in the power supply units containing the