Rockwell Automation 1769-SM1 Compact I/O to DPI/SCANport Module - Manual (Page 166)

G-4 Glossary
I
Idle Action
An idle action determines how the 1769-SM1 and connected product
respond when the controller is switched out of run mode.
I/O Data
I/O data, sometimes called “implicit messages” or “input/output,”
transmit time-critical data such as a Logic Command and Reference. The
terms “input” and “output” are defined from the controller’s point of
view. Output is produced by the controller and consumed by the
1769-SM1. Input is produced by the 1769-SM1 and consumed by the
controller.
L
Logic Command/Logic Status
The Logic Command is used to control the DPI or SCANport drive (for
example, start, stop, direction). It consists of one 16-bit word of output to
the 1769-SM1 from the network. The definitions of the bits in this word
depend on the drive.
The Logic Status is used to monitor the DPI or SCANport drive (for
example, operating state, motor direction). It consists of one 16-bit word
of input from the 1769-SM1 to the network. The definitions of the bits in
this word depend on the drive.
N
NVS (Non-Volatile Storage)
NVS is the permanent memory of a device. Devices such as the
1769-SM1 and drive(s) store parameters and other information in NVS
so that they are not lost when the device loses power. NVS is sometimes
called “EEPROM.”
O
Objects
The CIP common specification defines an object as “an abstract
representation of a particular component within a product.”
P
Ping
A ping is a message that is sent by a DPI or SCANport drive to its
peripheral devices. They use the ping to gather data about the product,
including whether it can receive messages and whether they can log in
for control.
PowerFlex 7-Class (Architecture-Class) Drives
The Allen-Bradley PowerFlex 7-Class (Architecture-Class) family of
drives include the PowerFlex 70, PowerFlex 700, PowerFlex 700 Series
B, PowerFlex 700H, PowerFlex 700S, and PowerFlex 7000. These