- 行业: Automation
- Number of terms: 8432
- Number of blossaries: 0
- Company Profile:
Rockwell Automation, Inc. provides industrial automation power, control, and information solutions.
The process of absorbing and clipping voltage transients on an incoming ac line or control circuit. MOVs (Metal-Oxide Varistors) and specially designed R-C networks are usually used to accomplish this.
Industry:Automation
1) For A/D conversion, the digital value generated by a zero analog signal. 2) For D/A conversion, the digital value that generates a zero analog signal.
Industry:Automation
A programmable controller system configuration consisting of a primary and a backup (secondary) processor. If the primary processor fails, the backup processor takes over operations automatically.
Industry:Automation
In programming, a signal that is used to govern access to shared system resources. A semaphore is a flag variable — an indicator — that helps maintain order among processes that are competing for use of such critical resources as microprocessor time and communication ports. See also flag
Industry:Automation
Unwanted disturbances imposed upon a signal that tend to obscure its data content.
Industry:Automation
An I/O module that contains circuits that output an analog dc signal proportional to a digital value transferred to the module from the processor. By implication, these analog outputs are usually direct (i.e., a data table value directly controls the analog signal value).
Industry:Automation
The process of breaking up a continuous variable into discrete quanta or parts.
Industry:Automation
1) For analog inputs, the time between updates to the memory in the analog module of the digital value representing the analog input signal. 2) For analog outputs, the time from the digital value being received at the analog module to when the analog output signal corresponds to that digital value.
Industry:Automation
A programming process that takes a user keyboard command (source code) and converts it into hexadecimal format to generate an object code for program execution.
Industry:Automation
