Rockwell Automation 1756-CFM ControlLogix Configurable Flowmeter Module - Manual (Page 158)

158 Rockwell Automation Publication 1756-UM010B-EN-P - December 2011
158 Glossary
Major revision A module revision that is updated any time there is a functional change to the
module resulting in an interface change with software
Minor revision A module revision that is updated any time there is a change to the module
that does not affect its function or software user interface (e.g. bug fix)
Multicast Data transmissions which reach a specific group of one or more destinations
Network update time (NUT) The smallest repetitive time interval in which the data can be sent on a
ControlNet network. The NUT may be configured over the range from 2ms
to 100ms using RSNetWorx software
Nonresettable Totalizer Mode Operational mode in which CFM module counts pulses from a Flowmeter and
scales them into volume (engineering units). In this mode, though, the count
total cannot be reset during normal module operation.
Owner controller The controller that creates and stores the primary configuration and
communication connection to a module
Producer/consumer Intelligent data exchange system devices in which the CFM module produces
data without having been polled first
Program mode In this mode, the controller program is not executing.
Inputs are actively producing data.
Outputs go to their configured program mode state
Prover Device used for the calibration of liquid meters in custody transfer
applications. Calibration compares a metered throughput to a known volume
in the prover.
Remote connection An I/O connection where the controller establishes an individual connection
with I/O modules in a remote chassis
Removable terminal block (RTB) Field wiring connector for I/O modules
Removal and insertion under
power (RIUP)
ControlLogix feature that allows a user to install or remove a module or RTB
while power is applied
Requested packet interval (RPI) A configurable parameter which defines when the module will multicast data
Run mode In this mode, the controller program is executing
Inputs are actively producing data.
Outputs are actively controlled
Service A system feature that is performed on user demand
System side Backplane side of the interface to the I/O module
Tag A named area of the controller’s memory where data is stored
like a variable