![background image](http://html1.mh-extra.com/html/omron/dst1-series/dst1-series_operation-manual_743062019.webp)
Glossary
Glossary
Term Description
idle data
Data sent when the originating application is in an inexecutable state.
assembly
Internal data in a device gathered as one group to be accessed externally.
safety data
Data with high reliability.
error latch time
The time period to hold an error state (control data, status data, and LED
indications).
open type
The open method for Safety Connection. One of three types is selected in the
settings of a connection to the Safety Master.
connection
A logical communications path used to communicate between devices.
configuration
The settings for a device and a network.
single channel
Using only one input or output as the input or output.
standard
A device or device function to which safety measures are not applied.
safety controller (safety PLC)
A controller with high reliability used for the safety control.
safety chain
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).
safety protocol
The communications hierarchy added to actualize highly reliable
communications.
safety signature
A certificate of the configuration data issued to a device from the Network
Configurator. The device verifies that the configuration data is correct by using
the safety signature.
test pulse
A signal used to detect external wiring coming into contact with the power supply
(positive) or short circuits between signal lines.
dual channel
Using two inputs or outputs as the input or output for redundancy.
Dual Channel Complementary
Setting to evaluate that two logic states are complementary.
Dual Channel Equivalent
Setting to evaluate that two logic states are equivalent.
Busoff
Status that occurs when the error rate is extremely high over a communications
cable. An error is detected when the internal error counter exceeds a certain
threshold value. (The internal error counter is cleared when the Master is started
or restarted.)
DeviceNet Safety
A safety network that adds a safety protocol to DeviceNet to comply with
IEC61508 SIL3, EN954-1 Safety Category 4.
discrepancy time
The time period from a change in one of two inputs until the other input changes.
EPI
The interval of safety data communications between the Safety Master and the
Safety Slave.
multi-cast connection
Safety I/O communications in a 1:n configuration (n = 1 top 15).
single-cast connection
Safety I/O communications in 1:1 configuration .
TUNID
The UNID of the local node. Usually the TUNID is set from the Network
Configurator.
UNID
A identifier to specify one device in all the network domains. Values combining
the network address and the node address are used.
13
Summary of Contents for DST1 Series
Page 2: ......
Page 3: ......
Page 4: ......
Page 5: ...DST1 series Safety I O Terminals Operation Manual Produced April 2005 ...
Page 6: ......
Page 24: ...Section 1 Overview ...
Page 44: ...Section 2 General Procedure ...
Page 50: ...Section 3 Configuration ...
Page 63: ...Section 4 Specifications ...
Page 67: ...Section 5 DST1 series ...
Page 79: ...Section 6 Troubleshooting and Maintenance ...
Page 87: ...Section 7 Wiring Examples ...
Page 97: ...Appendices ...
Page 114: ...Cat No Z904 E1 01 OPERATION MANUAL DST1 series Safety I O Terminals ...