Rockwell Automation 1732E-IB16M12SOEDR EtherNet/IP ArmorBlock supporting Sequence of Events User Manual

Page 114

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Publication 1732E-UM002A-EN-P - March 2010

106 Glossary

online

Describes devices under direct communication. For example, when
RSLogix 5000 is monitoring the program file in a controller.

operating voltage

For inputs, the voltage range needed for the input to be in the On state. For
outputs, the allowable range of user-supplied voltage.

output device

A device, such as a pilot light or a motor starter coil, that is controlled by the
controller.

PTP

Precision Time Protocol. A IEEE-1588 protocol to synchronize independent
clocks running on separate nodes of a distributed measurement and control
system to a high degree of accuracy and precision.

processor

A Central Processing Unit. See CPU.

processor file

The set of program and data files used by the controller to control output
devices. Only one processor file may be stored in the controller at a time.

program file

The area within a processor file that contains the ladder logic program.

program mode

When the controller is not executing the processor file and all outputs are
de-energized.

program scan

A part of the controller’s operating cycle. During the scan the ladder program
is executed and the output data file is updated based on the program and the
input data file.

programming device

Executable programming package used to develop ladder diagrams.

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