Glossary
STOBER
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02/2020 | ID 443025.06
Glossary
Broadcast domain
Logical grouping of network devices within a local network that reaches all nodes via broadcast.
CiA 402
Application of the commissioning software, which includes both the controller-based and drive-based operating modes
(csp, csv, cst, ip, pp, pv, pt).
CiA 402 HiRes Motion
Application of of the commissioning software, which includes both the controller-based and drive-based operating
modes (csp, csv, cst, ip, pp, pv, pt). The interface for the controller is tailored to the HiRes MC6 device driver, meaning
that set and actual values are represented and transmitted in units that can be defined by the user.
CoE
EtherCAT protocol that provides CANopen-compliant communication mechanisms, enabling the use of the entire
CANopen profile family over EtherCAT.
DC-Sync
Also: Synchronization using distributed clocks. Method for EtherCAT network synchronization. Each EtherCAT slave
with distributed clocks functionality has a local clock. Normally, the time from the first DC-Sync-capable EtherCAT slave
downstream of the master in the network serves as the reference time: Both the master and the slaves synchronize
with this reference clock when prompted by the master. The event belonging to a synchronization is labeled as a Sync
0 signal and is generated cyclically by the SyncManager of each slave.
EMCY
Communication objects in a CANopen or EtherCAT network that, in the event of incorrect state transitions or device-
internal errors, transmit the associated error codes and causes.
EoE
Acyclical EtherCAT protocol that enables any data traffic between EoE-capable nodes of an EtherCAT network. The
Ethernet frames are tunneled through the EtherCAT protocol; the EtherCAT real-time properties remain unimpaired.
The EtherCAT master is used as a gateway to the Ethernet network.
IPv4 limited broadcast
Type of broadcast in a network with IPv4 (Internet Protocol version 4). The IP address 255.255.255.255 is entered as
the destination. The content of the broadcast is not redirected by a router, which limits it to the local network.
jitter
Generally refers to slight fluctuations in the clock when transmitting digital signals or a slight accuracy fluctuation in
the transmission clock. In network technology, it is also variance in the run time of data packets.