Rockwell Automation 1734-IE4S POINT Guard I/O Safety Modules User Manual - Manual (Page 12)

12 Rockwell Automation Publication 1734-UM013J-EN-P - July 2014
Preface
Terminology Refer to this table for the meaning of common terms.
Access Product Release Notes Product release notes are available online within the Product Compatibility and
Download Center.
1. From the Quick Links list on http://www.ab.com , choose Product
Compatibility and Download Center.
2. From the Compatibility Scenarios tab or the Get Downloads tab, search
for and choose your product.
3. Click the download icon to access product release notes.
Term Means
Connection Logical communication channel for communication between nodes. Connections are maintained and controlled between masters and slaves.
EDS Electronic data sheet, a template used in RSNetWorx software to display the configuration parameters, I/O data profile, and connection-type support for a
given I/O module. RSNetWorx software uses these simple text files to identify products and commission them on a network.
ODVA Open DeviceNet Vendor Association, a nonprofit association of vendors established for the promotion of CIP networks.
PFD Probability of failure on demand, the average probability of a system to fail to perform its design function on demand.
PFH Probability of failure per hour, the probability of a system to have a dangerous failure occur per hour.
Proof test Periodic test performed to detect failures in a safety-related system so that, if necessary, the system can be restored to an as-new condition or as close as
practical to this condition.
SNN Safety network number, which uniquely identifies a network across all networks in the safety system. You are responsible for assigning a unique number
for each safety network or safety sub-net within a system.
Standard Devices or portions of devices that do not participate in the safety function.