System manual CECX / System overview
3.2.3 Internal memory of the CECX modular control system
The available memory of the CECX modular control system is divided au-
tomatically under CoDeSys.
Please adhere to the following maximum sizes:
Memory Description Value
Code Working memory to execute the user
programs
6,144 KByte
Global data Data memory for IEC project 18,432 KByte
Marker Marker memory 8 KByte
Inputs Input map memory 8 KByte
Outputs Output map memory 8 KByte
Retain Battery-buffered SRAM 128 KByte
Marker-variables and retain-data are stored in different memories. Because
of this it is not possible to mark a retain variable.
3.3 Start-up and programming (overview)
The CoDeSys 2.3 development environment serves for the start-up and
programming of the CECX modular control system.
CoDeSys offers a comfortable user interface with the following functions:
Configuration and parameterization of the CECX modular control sys-
tem (with the control configuration)
Programming according to EN 61131-3 (see chapter Programming lan-
guages)
Integrated module libraries (see Description of library)
Library administrator for integrating additional libraries
Simulation mode (enables projects to be tested on the PC without PLC)
Documentation (integrated project documentation)
Debugging function (testing program sequence, monitoring and modify-
ing variables, error search).
To enable a control (target system) to be used under CoDeSys a so-called
target support package is required for the respective target system. This
enables the system functions of the target system to be accessed (and con-
tains appropriate information in the form of online Help).
CoDeSys is supplied with the target support package for the CECX modu-
lar control system.
CECX-II 3-5