Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 510)

Glossary
G–6
terminal: A point on an I/O module that external I/O devices, such as a
push button or pilot light, are wired to.
throughput: The time between when an input turns on and the
corresponding output turns on.
true: The status of an instruction that provides a continuous logical path on
a ladder rung.
upload: Data is transferred to a programming or storage device from
another device.
user interrupt poll: While executing the user program, the controller
firmware checks for user interrupts that need servicing.
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 will cause a fault.
workspace: The main storage available for programs and data and allocated
for working storage.
write: To copy data to a storage device. For example, the controller
WRITEs the information from the output data file to the output devices.