Omron CJ1W-ECT21 Operation Manual page 30

Terminology
Term
process data object
receive PDO
Safe-Operational
SDO communications
service data object
Slave Information Interface
subindex
Sync Manager
task period
transmit PDO
28
Abbreviation
PDO A structure that describes the mappings of parameters
that have one or more process data entities.
RxPDO A process data object received by an EtherCAT slave.
--- A state in EtherCAT communications where only SDO
communications and reading input data from slaves
are possible. Outputs from slaves are not performed.
--- One type of EtherCAT communications in which ser-
vice data objects (SDOs) are used to transmit informa-
tion whenever required.
SDO CoE asynchronous mailbox communications where all
objects in the object dictionary can be read and written.
SII Slave information that is stored in non-volatile memory
in the slave.
--- Sub-address of an object within the object dictionary.
SM Collection of control elements to coordinate access to
concurrently used objects.
--- The interval at which the primary periodic task or a
periodic task is executed.
TxPDO A process data object sent from an EtherCAT slave.
CJ-series EtherCAT Slave Units Operation Manual for NJ-series CPU Unit (W542)
Description