Terminology

This table defines the terms that are used in this publication.
Terminology
Acronym
Full Term
Definition
BP
Backplane Power
Power that is generated from module power by the adapter and expansion power, and supplied to the I/O system through the backplane.
CIP™
Common Industrial Protocol
An industrial communication protocol that is used by Logix 5000® based automation systems on EtherNet/IP™, ControlNet®, and DeviceNet® communication networks.
CIP Sync™
Common Industrial Protocol Synchronization
CIP Sync provides the increased control coordination needed for control applications where absolute time synchronization is vital to achieve real-time synchronization between distributed intelligent devices and systems.
HSC
High-speed Counter
A device that is used to count input signals at a rapid rate. Typically associated with incremental encoders.
MB
Mounting Base
A device that provides data and power connections from the backplane to the installed module.
MP
Module Power
Power that is supplied to the adapter and expansion power.
MSB
Most Significant Bit
The bit that has the largest value in a multi-bit binary number.
ODVA
Open DeviceNet Vendor Association
A nonprofit association of vendors that are established for the promotion of CIP networks.
PL
Performance Level
ISO 13849-1 safety rating
RIUP
Removal and Insertion Under Power
A feature that enables the device to be connected and disconnected from the system without having to remove power from the system.
RPI
Requested Packet Interval
Time interval (usually in milliseconds) that users are requesting their data be exchanged at
RTB
Removable Terminal Block
A component that is used for wiring field devices to.
SA
Sensor Actuator - Power
Sensor Actuator Power (24V DC nominal) for the field devices.
SELV
Safety Extra Low Voltage
An electrical system where the voltage level is considered safe under normal or fault conditions, as defined in the EN and IEC standards.
SSI
Serial Synchronous Interface
A serial communication standard for transmitting data between a leader device and a follower device. Typically associated with absolute encoders.
SSV
Sensor Source Voltage
Voltage that is supplied to a sensor.
VCL
Voltage Clamp Low
The low threshold for limiting the voltage level.
XT
Extreme Environment
Modules with XT at the end of their catalog numbers have design considerations and conformal coating that add a degree of protection for harsh, corrosive gas environments.
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