Omron R88M-1M Series User Manual page 46

Terminology
safety control
Safety over EtherCAT
safety process data communications
safety reaction time
Service Data Object
Slave Information Interface
standard control
Subindex
Sync Manager
Transmit PDO
44
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User's Manual (I586)
Abbrevi-
Term
ation
--- A type of control that uses devices, functions, and
data that are designed with special safety measures.
FSoE A system to communicate for the functional safety
over EtherCAT.
--- A type of I/O data communications that is used for
safety control purposes.
--- The time required for the system to enter a safe state
in a worst-case scenario after the occurrence of a
safety-related input (press of an emergency stop
pushbutton switch, interruption of a light curtain,
opening of a safety door, etc.) or device failure.
The reaction time of the system includes the reaction
times of sensors and actuators, just like the reaction
time for a Controller or network.
SDO CoE asynchronous mailbox communications where
all objects in the object dictionary can be read and
written.
SII Slave information stored in the nonvolatile memory
of each slave.
--- A type of control that use devices, functions, and
data that are designed for general control purposes.
This term is used to differentiate from a safety con-
trol.
--- Sub-address of an object within the object dictionary.
SM Collection of control elements to coordinate access
to concurrently used objects.
TxPDO A process data object sent from an EtherCAT slave.
Description