supporting Sequence of Events

Publication 1732E-UM002A-EN-P - March 2010
100 Glossary
send a message from the “producing” device in a system to the “consuming”
devices.
CIP Sync
CIP Sync is a CIP implementation of the IEEE 1588 PTP protocol in which
devices can bridge the PTP time across backplanes and on to other networks
via EtherNet/IP ports.
CIP Sync provides accurate real-time (Real-World Time) or Universal
Coordinated Time (UTC) synchronization of controllers and devices
connected over CIP networks.
communication scan
A part of the controller’s operating cycle. Communication with other devices,
such as software running on a personal computer, takes place.
controller
A device, such as a programmable controller, used to monitor input devices
and control output devices.
controller overhead
An internal portion of the operating cycle used for housekeeping and set-up
purposes.
control profile
The means by which a controller determines which outputs turn on under
what conditions.
counter
1) An electro-mechanical relay-type device that counts the occurrence of some
event. May be pulses developed from operations such as switch closures or
interruptions of light beams.
2) In controllers, a software counter eliminates the need for hardware counters.
The software counter can be given a preset count value to count up or down
whenever the counted event occurs.
CPU
Central Processing Unit. The decision-making and data storage section of a
programmable controller.