Publication 1766-RM001A-EN-P - October 2008
676
Glossary
sourcing
A term used to describe current flow between two devices. A sourcing
device or circuit provides a power.
status
The condition of a circuit or system.
terminal
A point on an I/O module that external devices, such as a push button or
pilot light, are wired to.
throughput
The time between when an input turns on and a corresponding output
turns on or off. Throughput consists of input delays, program scan, output
delays, and overhead.
true
The status of an instruction that provides a continuous logical path on a
ladder rung.
upload
Data is transferred from the controller to a programming or storage
device.
watchdog timer
A timer that monitors a cyclical process and is cleared at the conclusion of
each cycle. If the watchdog runs past its programmed time period, it
causes a fault.
write
To send data to another device. For example, the processor writes data to
another device with a message write instruction.
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