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EtherCAT controller of status motion is controlled by EtherCAT Master.
Table 3-1: EtherCAT Operational state.
Status
SDO
Rx PDO
Tx PDO
Description
INIT
Non Available Non Available Non Available
EtherCAT communication
is to reset. Status of
communication is not
available at this stage.
PRE-OP
Available
Non Available Non Available
After initialization of
communication, enters
into this stage. Network
setting is initialized. Only
mailbox communication is
available at this stage.
SAFE-OP
Available
Non Available Available
Stage of Tx PDO
communication is
available.
OP
Available
Available
Available
All of communication is
available.
BOOT
Available
Non Available Non Available
Only mailbox
communication is
available. Possible to
renew F/W of product with
using FoE Protocol at this
stage.
3.4
Synchronization
Synchronization modes provided from controller are as below.
Figure 3-6: Type of EtherCAT Synchronization and differences.