Glossary - Omron DEVICENET SAFETY - SYSTEM CONFIGURATION 07-2009 System Configuration Manual

Glossary

Term
assembly
Busoff
configuration
connection
DeviceNet Safety
discrepancy time
dual channel
Dual Channel Complementary
Dual Channel Equivalent
EPI
error latch time
multi-cast connection
open type
safety chain
safety controller (safety PLC)
safety data
safety protocol
safety signature
single channel
single-cast connection
Standard
test pulse
TUNID
output connection owner
configuration owner
EtherNet/IP
CPU Unit without EtherNet/IP
Internal data in a device gathered as one group to be accessed externally.
Status that occurs when the error rate is extremely high over a communica-
tions cable. An error is detected when the internal error counter exceeds a cer-
tain threshold value. (The internal error counter is cleared when the Master is
started or restarted.)
The settings for a device and a network.
A logical communications path used to communicate between devices.
A safety network that adds a safety protocol to DeviceNet to comply with up to
SIL3 according to IEC61508, up to Safety Category 4 according to EN954-1.
The time period from a change in one of two inputs until the other input
changes.
Using two inputs or outputs as the input or output for redundancy.
Setting to evaluate that two logic states are complementary.
Setting to evaluate that two logic states are equivalent.
The interval of safety data communications between the Safety Master and the
Safety Slave.
The time period to hold an error state (control data, status data, and LED indi-
cations).
Safety I/O communications in a 1:n configuration (n = 1 top 15).
The open method for Safety Connection. One of three types is selected in the
settings of a connection to the Safety Master.
The logical chain to actualize a safety function, that consists of the input device
(sensor), the control device (including a remote I/O device), and the output
device (actuator).
A controller with high reliability used for the safety control.
Data with high reliability.
The communications hierarchy added to actualize highly reliable communica-
tions.
A certificate of the configuration data issued to a device from the Network Con-
figurator. The device verifies that the configuration data is correct by using the
safety signature.
Using only one input or output as the input or output.
Safety I/O communications in 1:1 configuration.
A device or device function to which safety measures are not applied.
A signal used to detect external wiring coming into contact with the power sup-
ply (positive) or short circuits between signal lines.
An identifier to specify one device in all the network domains. Values combin-
ing the network address and the node address are used.
The Safety Slave stores the TUNID of the Safety Master that established con-
nections as the output connection owner to prevent unintended safety outputs
from a Safety Master. The stored TUNID is held until the Safety Slave is reset
to default settings.
The Safety Slave stores configuration owner data to prevent unintended con-
figuration from a remote device. If the Safety Slave was configured by Support
Software such as the Network Configurator, it stores the configuration owner
was Support Software. If the Safety Slave was configured by a Safety Master, it
stores the Safety Master TUNID. the stored data is held until the Safety Slave
is reset to default settings.
EtherNet/IP is a network that supports CIP using TCP/IP technology. It can
coexist with other TCP/IP-based protocols, and it enables large-capacity and
high-speed communications.
A CPU Unit with one of the following model numbers: NE1A-SCPU01(-V1) or
NE1A-SCPU02.
Definition
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