![Festo CMMP-AS-***-M0 Series Скачать руководство пользователя страница 63](http://html1.mh-extra.com/html/festo/cmmp-as-m0-series/cmmp-as-m0-series_manual_2283119063.webp)
4
EtherCAT interface
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
63
munication finite state machine:
Init
Pre-Operational
Safe-Operational
Operational
(OI)
(OS)
(SO)
(SI)
(PS)
(OP)
(PI)
(IP)
(SP)
Fig. 4.3
Communication finite state machine
The transitions are described individually in the following table.
Status transition
Status
IP
Start of acyclic communication (mailbox telegram protocol)
PI
Stop of acyclic communication (mailbox telegram protocol)
PS
Start Inputs Update: start of cyclic communication (process data telegram
protocol) Slave sends actual values to master. The slave ignores setpoint values
from the master and uses internal default values.
SP
Stop Input Update: stop of cyclic communication (process data telegram
protocol). The slave no longer sends actual values to the master.
SO
Start Output Update: The slave evaluates up-to-date setpoint specifications
from the master.
OS
Stop Output Update: The slave ignores setpoint values from the master and
uses internal default values.
OP
Stop Output Update, Stop Input Update:
stop of cyclic communication (process data telegram protocol). The slave no
longer sends actual values to the master, and the master no longer sends
setpoint values to the slave.