Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual - Manual (Page 389)

Rockwell Automation Publication 1766-UM001H-EN-P - May 2014 349
Glossary
The following terms are used throughout this manual. Refer to the Allen-Bradley
Industrial Automation Glossary, publication AG-7.1, for a complete guide to
Allen-Bradley technical terms.
address
A character string that uniquely identifies a memory location. For example, I:1/0
is the memory address for the data located in the Input file location word1, bit 0.
AIC+ Advanced Interface Converter
A device that provides a communication link between various networked devices.
(Catalog Number 1761-NET-AIC.)
application
1) A machine or process monitored and controlled by a controller.
2) The use of computer- or processor-based routines for specific purposes.
baud rate
The speed of communication between devices. All devices must communicate at
the same baud rate on a network.
bit
The smallest storage location in memory that contains either a 1 (ON) or a 0
(OFF).
block diagrams
A schematic drawing.
Boolean operators
Logical operators such as AND, OR, NAND, NOR, NOT, and Exclusive-OR
that can be used singularly or in combination to form logic statements or circuits.
Can have an output response of T or F.
branch
A parallel logic path within a rung of a ladder program.
communication scan
A part of the controller’s operating cycle. Communication with other devices,
such as software running on a personal computer, takes place.