Rockwell Automation 1769-HSC Compact High Speed Counter Module User Manual
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Rockwell Automation Publication 1769-UM006E-EN-P - July 2013
Glossary
broadband link 1) A communication link that can have multiple channels. Each channel signal
modulates its own carrier frequency. Example: LAN/1 link. 2) Contrasted with
carrier-band link (
bus A single path or multiple parallel paths for power or data signals that several
devices can be connected at the same time. A bus can have several sources of
supply and/or several sources of demand.
carrier-band link 1) A communication link with a single channel whose signal modulates a carrier
frequency. Example: Data Highway II link. 2) Contrasted with broadband link
(
) and baseband link (
cascade connection A series connection of amplifier stages or links in which the output of one stage
feeds the input of the next.
cascading timers/counters A programming technique of using multiple timers and/or counters to extend the
range of the timer or counter beyond the maximum values that can be
accumulated in a single instruction.
channel A path for a signal. Several channels can share a common link.
chassis A hardware assembly that houses devices such as I/O modules, adapter modules,
processor modules, and power supplies.
communication format Format that defines the type of information transferred between an I/O module
and its owner controller. This format also defines the tags created for each I/O
module.
compatible match An electronic keying protection mode that requires the physical module and the
module configured in the software to match according to vendor, catalog
number, and major revision. In this case, the minor revision of the module must
be greater than or equal to that of the configured slot.
configuration The arrangement and interconnection of hardware components within a system,
and the hardware (switch and jumper) and software selections that determine the
operating characteristics of the system.
connection The communication mechanism from the controller to another module in the
control system.
controller A unit, such as a programmable controller or relay panel, that controls machine or
process elements.