Omron NE1A-SCPU01 - 07-2009 Operation Manual page 324

Term
CPU Unit with EtherNet/IP (Unit support-
ing EtherNet/IP)
cyclic connection
DeviceNet
DeviceNet Safety
discrepancy time
dual channel
Dual Channel Complementary
Dual Channel Equivalent
EPI
error latch time
EtherNet/IP
explicit message connection
Fault Present
multi-cast connection
Network Configurator
node
offline
online
open type
PFD
PFH
290
Glossary
A CPU Unit with one of the following model numbers: NE1A-SCPU01-EIP or
NE1A-SCPU02-EIP
One of the connection types for I/O communications in DeviceNet standard
communications.
For a cycle connection, data is sent after a set period of time elapses. A cyclic
connection enables sending data on a cycle that is different from the communi-
cations cycle of the Master.
A CIP-compliant network that uses CAN technology. DeviceNet is mainly used
as a field network to connect controllers, sensors, and other devices.
A DeviceNet that complies with CIP Safety, i.e., IEC 61508 SIL3 and EN 954-1
Safety Category 4.
The time period from a change in one of two inputs until the other input
changes. When using a dual-channel input, a suitable time must be set
depending on the characteristics of the connected devices.
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.
An acronym for Expected Packet Interval.
The interval of safety data communications between the Safety Master and the
Safety Slave through an established connection.
The time period to hold an error state (control data, status data, and LED indi-
cations).
A CIP-compliant network that uses TCP/IP technology. EtherNet/IP can coexist
with other TCP/IP-based protocols in high-capacity, high-speed networks.
A connection type for explicit messages in DeviceNet standard communica-
tions.
Several function blocks have Fault Present as an optional output. This is an
error output that indicates that the applicable function block has detected an
internal logic error or an input data timing error.
One of the connection types for DeviceNet Safety communications.
With a multi-cast connection, multi-cast input data can be sent from a Safety
Slave to up to 15 Safety Masters. This connection type can be set only for a
Safety Slave input. It cannot be set for outputs. This connection type enables
effective communications when sharing the data from one Safety Slave
between more than one Safety Master.
A software tool used to set networks and devices for CIP and CIP Safety.
A generic name for devices to which addresses are allocated in a network.
Nodes are sometimes also called devices.
The state in which a device is not connected to the network or in which com-
munications are not possible because they have not been set from the Net-
work Configurator.
The state in which communications through the network are possible.
The opening method for a safety connection. One of three types is selected in
the settings of a connection to the Safety Master. Refer to 5-1 Setting Safety
Connections in the DeviceNet Safety System Configuration Manual (Cat. No.
Z905-E1-07 or higher) for details.
• Configuring the target device
• Checking the safety signature
• Only opening
An acronym for Probability of Failure on Demand.
Shows the average failure rate for a system or device demand. Used for calcu-
lating the SIL (Safety Integrity Level) for a safety system.
An acronym for Probability of Failure per Hour.
Shows the failure rate per hour for a system or device. Used for calculating the
SIL (Safety Integrity Level) for a safety system.
Definition