Rockwell Automation 1784-KTXD User Manual Page 276

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Publication 1747-UM011F-EN-P - May 2007
276 Glossary
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.
BOOTP (Bootstrap Protocol)
A low-level protocol that provides configuration information to other
nodes on a TCP/IP network with DOS, Microsoft Windows,
Windows NT, Windows 9x, VMS, and HP-UNIX platforms.
branch
A parallel logic path within a rung of a ladder program. Its primary
use is to build OR logic.
calculated watts
The amount of heat generated by those points energized on an I/O
module.
channel
Communication port on a module.
chassis
A hardware assembly that houses devices such as I/O modules,
adapter modules, processor modules, and power supplies.
communication scan
A part of the controller’s operating cycle. Communication with devices
(such as other controllers and operator interface devices) takes place
during this period.
continuous current per module
The maximum current for each module. The sum of the output
current for each point should not exceed this value.
continuous current per point
The maximum current each output is designed to continuously supply
to a load.
control program
User logic (the application) that defines the controller’s operation.
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