Glossary Terms
Terms that are used on the Manufacturing Automation website
Assembler
A program that translates symbolic source code (written in assembly
language) into machine instructions (in machine code) by replacing
symbolic operation codes with binary operation codes, and symbolic
addresses with absolute or relocatable addresses.
Association
A relationship between entities or data elements in a logical data model.
Asynchronous computer
a computer providing operations that are not timed by a master clock.
The signal to start an operation is provided by the completion of some
operation.
Asynchronous Scanning
A scanning arrangement where two scans (I/O and user program) operate
independently of each other with no synchronization, so that any
relative timing between the two scans is totally random.
ATM
Asynchronous transfer mode; a communications standard
Attribute
A means of characterizing data on a display device (e.g. intensifying, blinking).
Autoload
In an SLC controller, the process of transferring contents of the memory module to the processor memory at power up.
Automation
1) The conversion to and implementation of procedures, processes or
equipment by automated means.
2) Industrial open or closed-loop control
system in which manual operation of controls is replaced by servo
operation.
Axial Load
A load applied along or parallel to and concentric with the primary axis.
Axis
Any movable part of a machine or system that requires controlled
motion. Several axes of motion can be combined in a coordinated
multiaxis system.
