Industrial automation

Industrial automation

Industry: Automation

Add a new term

Contributors in Industrial automation

Become a Contributors

Industrial automation

block-check character (BCC)

Automation; Industrial automation

The 2’s complement of the 8-bit sum (modulo-256 arithmetic sum) of all data bytes in a transmission block. It provides a means of checking the accuracy of each message transmission.

non-retentive output instruction

Automation; Industrial automation

1) A rung-output instruction that continuously controls the state of the output. Whenever the rung changes state (to true or not true), the output turns on or off. 2) Contrasted with a retentive ...

channel

Automation; Industrial automation

A path for a signal. Several channels may share a common link.

negative feedback

Automation; Industrial automation

Feedback that is subtractive from the input reference signal. Negative feedback forms the basis for closed-loop control systems.

logic level

Automation; Industrial automation

The voltage magnitude associated with signals in logic circuits.

A binary numbering system that is coded such that sequential numbers are represented by expressions that differ in only one bit, to minimize errors that could otherwise occur during transitions in a ...

bus

Automation; Industrial automation

A single path or multiple parallel paths for power or data signals to which several devices may be connected at the same time. A bus may have several sources of supply and/or several sources of ...