![Festo CMMP-AS-***-M0 Series Скачать руководство пользователя страница 64](http://html1.mh-extra.com/html/festo/cmmp-as-m0-series/cmmp-as-m0-series_manual_2283119064.webp)
4
EtherCAT interface
64
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
Status transition
Status
SI
Stop Input Update, Stop Mailbox Communication:
Stop of cyclic communication (process data telegram protocol) and stop of
acyclic communication (mailbox telegram protocol). The slave no longer sends
actual values to the master, and the master no longer sends setpoint values to
the slave.
OI
Stop Output Update , Stop Input Update, Stop Mailbox Communication:
Stop of cyclic communication (process data telegram protocol) and stop of
acyclic communication (mailbox telegram protocol). The slave no longer sends
actual values to the master, and the master no longer sends setpoint values to
the slave.
Tab. 4.10 Status transitions
In the EtherCAT finite state machine, the “Bootstrap” status is also specified in addition
to the statuses listed here. This status is not implemented for the motor controller
CMMP-AS-...-M3.
4.7.1
Differences between the finite state machines of CANopen and EtherCAT
When operating the CMMP-AS-...-M3 via the EtherCAT-CoE protocol, the EtherCAT finite state machine
is used instead of the CANopen NMT finite state machine. This differs from the CANopen finite state
machine in several aspects. These different characteristics are listed below:
–
No direct transition from Pre-Operational after Power On
–
No Stopped status, direct transition to the INIT status
–
Additional status: Safe-Operational
The following table compares the different statuses:
EtherCAT State
CANopen NMT State
Power ON
Power-On (initialisation)
Init
Stopped
Safe-Operational
–
Operational
Operational
Tab. 4.11 Comparison of the statuses for EtherCAT and CANopen