Festo CPX-E-CEC Series - Function; General function overview; Internal address assignment

2 Function
2.1 General
The product is intended for operation as a controller in an automation system CPX-E and can be pro-
grammed with CODESYS in accordance with IEC61131-3.
Communication with a PC via a network connection (Ethernet). Standard Ethernet (TCP/IP) and Mod-
busTCP are also supported.
2.1.1 Crossover detection (auto MDI/MDI-X)
The product supports crossover detection (auto MDI/MDI-X), which means that there is the option of
using patch cables or crossover cables.
When using patch cables and crossover cables in the network, crossover detection must be activated
in the higher-order controller.
2.2 Internal address assignment
In addition to the controllerCPX-E-CEC, a maximum of 10modules is permitted in one automation sys-
temCPX-E. The address space of an automation systemCPX-E is limited. The controller provides the
automation systemCPX-E with a maximum address space of 64bytes for inputs and 64bytes for out-
puts.
The internal addresses for the inputs and outputs of the automation system CPX-E are assigned auto-
matically.
Module Address assignment
CPX-E-16DI... 2byte inputs
CPX-E-8DO... 1byte outputs
CPX-E-4AI-U-I... 8byte inputs
CPX-E-4AO-U-I... 8byte outputs
CPX-E-4IOL... Max. 32byte inputs and 32byte outputs
CPX-E-1CI... 12byte inputs and 2byte outputs
Tab. 4 Internal address assignment
Function
6 Festo — CPX-E-CEC-... — 2018-09