2. Commissioning
2-4
Festo P.BE-CTEU-EC-OP+MAINT-EN en 1208NH
EtherCAT slave information
file (“ESI file”)
The file/its contents are available in Extensible Markup Lan-
guage (X ML).
The ESI file serves to identify the bus node in the EtherCAT
network. The ESI file sends basic properties of the EtherCAT
device, and manufacturer informatio n, to the configuration
program.
The ESI file contai ns all the information needed for the confi g-
uratio n and settings of the higher-order control l er usi ng co n-
figuration and programming software, e.g. Beckhoff TwinCA T.
The ESI file for the CTEU-EC bus node is available in two vari-
ants.
Modular ESI file This file requires that the I/O data are configured according
to the devices connected to the I-po rt. Two slots are available,
representing the respective I- ports. It is possible to read out
the existing configuratio n. Manual configuration is also pos-
sible. Here the connected device is selected from a module
list in the configuration interface. If configuration has been
performed incorrectly, an error will be output when switching
from PRE-OPERATIONAL to SAFE-OPERATIONAL status. This
will take the form of an “invalid SM IN cfg” or “inval-
id SM OUT cfg” message.
This error message indicates the cause of the failed startup.
Fixed ESI file This file works with the full I/O register of the CTEU-EC bus
node (16 byte I/O data), without precisely defining on the
user interface which devices are connected to the I-por t. I/O
assignment must be performed manually by the user.
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