Rockwell Automation 1753-DNSI DeviceNet Safety Scanner for GuardPLC Controllers - Manual (Page 121)

1 Publication 1753-UM002A-EN-P - July 2005
Glossary
Change of State (COS)
A type of standard I/O communication in which the interface module
can send and receive data with slave devices whenever a data change
occurs in the configured slave device or controller. Data is updated at
the rate of the heartbeat.
CIP Safety Protocol
A network communications method designed and certified for
transport of data to assure SIL 3 requirements.
Configuration Signature
The combination of an ID number date and time that uniquely
identifies a specific configuration for a device.
Controller ID (SRS)
A value required to uniquely identify a particular GuardPLC controller
within a network of controllers. Refer to the GuardPLC Controller
Systems User Manual, publication number 1753-UM001.
Controller Receive Timeout
The amount of time that the controller waits to receive an HSP
response from the scanner before closing the HSP connection.
Controller Resend Timeout
The amount of time that the controller waits for the acknowledgement
of a message before it resends it.
Cyclic
A type of standard I/O data communication in which the interface
module can send and receive data with slave devices that support the
cyclic feature. Data is only sent at the user-specified rate.
Electronic Data Sheet (EDS)
A vendor-supplied template that RSNetWorx for DeviceNet uses to
display the configuration parameters, I/O data profile, and connection
type support for a given DeviceNet or DeviceNet Safety module.
Explicit Messaging
A type of messaging used for lower priority tasks, such as
configuration and status monitoring.