BECKHOFF CX2020 - Manual (Page 9)

Product overview
interface can optionally be ordered. Please note that these have to be specified with the order, i.e.
retrospective installation is not possible. On the left­hand side the CPU features a multi­pin connector for
connecting further optional modules.
The components
The individual system components are modules with a width of 22 mm or multiples of it that can be
connected in­line with one another. The basic unit consists of the CX20x0 CPU module and a power supply
module (CX2100­0xxx).
Power supply unit with integrated I/O interface and optional UPS
The 24V DC power supply unit is available in three different versions:
• CX2100­0004: E­bus/K­Bus power supply unit with automatic switchover
• CX2100­0904: E­bus/K­Bus power supply unit with automatic switchover and integrated capacitive
UPS
• CX2100­0914: E­bus/K­Bus power supply unit with automatic switchover and integrated electronic
charging unit for external battery packs in order to maintain UPS functionality.
All power supply units feature an illuminated anti­glare LC display with two rows of 16 characters each for
displaying status messages. The application programs can also use the display for displaying application­
specific texts.
EtherCAT as a fast I/O system
The CX2020, CX2030 and CX2040 Embedded PCs were developed with a view towards optimised
interaction with EtherCAT. EtherCAT offers a wide range of application options. The separate Gigabit
Ethernet interfaces enable EtherCAT to be used with cable redundancy by using one of the Ethernet
interfaces as redundancy port. In addition, devices with EtherCAT slave interface can be operated such that
several intelligent controllers can be synchronised via an EtherCAT network.
PLC, Motion Control, interpolation and visualisation
As IPC on a DIN rail the CX2000 in conjunction with TwinCAT offers the functionality of large Industrial PCs.
Multi­core CPUs in conjunction with TwinCAT 3 enable PLC projects to be distributed to several cores,
resulting in significant performance gains. Moreover, all TwinCAT functionalities are available for Motion
Control applications: in theory, up to 256 axes can be controlled. In addition to simple point­to­point
movements, more complex multi­axis functions such as “electronic gearbox”, “cam plates” and “flying saw”
can be implemented. Due to the high­performance CPUs, the CX2000 can also perform interpolating 3­D
path movements and execute DIN66025 programs. In addition to handling real­time control tasks the
TwinCAT real­time kernel leaves enough time for the user interface (HMI). The high performance of the
graphics kernel integrated in the CPU enables demanding visualisations with advanced user interfaces to be
realised.
Fieldbus interfaces
The fieldbus interfaces are currently available as master and slave versions for the following fieldbuses.
Optional interfaces:
The optional interfaces can be used to connect single­channel fieldbus interfaces. Operation is limited to one
interface at a time. If several fieldbus interfaces are required, they can be added as E­bus terminals
(EL67xx). The following fieldbus interfaces are available:
• CX20x0­N010 = DVI­D, DVI­D connector
• CX20x0­N030 = RS232, D­Sub connector
• CX20x0­N031 = RS422/RS485, D­Sub socket
CX2020, CX2030, CX2040 9 Version 1.2