Parameterization and commissioning
EL6752 65Version: 2.1
6.7 EtherCAT description
6.7.1 Introduction
The DeviceNet functionality and configuration options can be changed and parameterized depending on the
different EtherCAT states.
EtherCAT states
The EtherCAT states (INIT, PREOP, SAFEOP, OP) have the following meaning according to the fieldbus-
specific functions:
EtherCAT state Meaning
INIT Fieldbus not running
PREOP Load fieldbus configuration
SAFEOP Fieldbus cyclic operation, safe state. Inputs are read, outputs are not written
OP Fieldbus cyclic operation.Inputs are read, outputs are written
The procedure and the configuration options are described below
6.7.1.1 EL6752 DeviceNet master configuration
The DeviceNet master and the associated DeviceNet slaves are configured in EtherCAT state PREOP. The
DeviceNet master parameters are written via the EtherCAT object 0xF800, the slave parameters are written
via the EtherCAT objects from 0x80n0 [}71], see section EtherCAT Object Description.
The EtherCAT states are mapped to DeviceNet as follows:
Fig.65: EtherCAT states in mapping on EL6752-0000
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