Rockwell Automation 9307 FactoryTalk EnergyMetrix - Manual (Page 325)

Glossary •
325
O
OPC: OPC (OLE for Process Control), is a consistent, standardized architecture for
communicating with plant floor devices.
Over forward setpoint: An over forward setpoint becomes active when the monitored
parameter exceeds the setpoint high limit in the positive direction, and remains
over the limit for longer than the time specified in the Operate Delay setting.
When a setpoint becomes active, it causes an action identified by the Action type
to occur and logs the occurrence in the event log. If the action energizes a relay or
sets an alarm bit, the action remains true until the setpoint becomes inactive. An
over forward setpoint becomes inactive when the monitored parameter falls below
the setpoint low limit in the positive direction, and remains below the limit for
longer than the time specified in the Release Delay setting.
Over reverse setpoint: An over reverse setpoint becomes active when the monitored
parameter exceeds the setpoint high limit in the negative direction, and remains
over the limit for longer than the time specified in the Operate Delay setting.
When a setpoint becomes active, it causes an action identified by the Action type
to occur and logs the occurrence in the event log. If the action energizes a relay or
sets an alarm bit, the action remains true until the setpoint becomes inactive. An
over reverse setpoint becomes inactive when the monitored parameter falls below
the setpoint low limit in the negative direction, and remains below the limit for
longer than the time specified in the Release Delay setting.
Over setpoint: An over setpoint becomes active when the monitored parameter exceeds
the high limit, and remains over the limit for longer than the number of seconds
specified in the Operate Delay setting. When a setpoint becomes active, it
operates the selected relay, unless the selected relay is NONE. If NONE, the
setpoint does not change any relay. An over setpoint becomes inactive when the
monitored parameter falls below the low limit, and remains below the limit for
longer than the number of seconds specified in the Release Delay setting. When a
setpoint becomes inactive, it releases the selected relay. (Bul. 1400 Powermonitor
only)
P
Power monitor: A device that measures the characteristics of the electricity in a circuit.
Privilege: A specific security access flag. Examples of Privileges are: Edit Users, View
Rate schedules, Run Billing Reports. A number of pre-defined Privileges are
defined ‘out of the box’ in the default Roles of Admin, User, and Guest.
R
Remote I/O: A legacy Allen-Bradley communication network for deterministic control of
remote input/output devices.
Role: A named collection of security attributes (Privileges). Roles are assigned to
Domains