Satec Expertmeter EM720 Operation Manual page 87

Chapter 5 Configuring the EM720
Using Setpoint Events and Actions
Recording Setpoint Events
EM720 Power Quality and Revenue Meter
When a setpoint status changes, i.e., a setpoint event is
either asserted or de-asserted, the following happens in
your device:
The new setpoint status is logged to the setpoint status
register that can be monitored from the SCADA system or
from a programmable controller in order to give an
indication on the expected event.
The operated setpoint status is latched to the setpoint
alarm latch register, which is remotely accessible. The
register holds the last setpoint alarm status until it is
explicitly cleared.
Up to four programmable actions can be performed in
sequence on setpoint status transition when a setpoint
event is asserted.
Generally, setpoint actions are performed independently
for each setpoint and can be repeated a number of times
for the same target. The exceptions are relay operations,
data logging and waveform logging that are shared
between all setpoints using an OR scheme for each
separate target.
A relay output is operated when one of the setpoints
linked to the relay is activated and stays in the operated
state until all of these setpoints are released (except for
latched relays that require a separate release command to
be deactivated).
Data logging and waveform logging directed to the same
file are done once for the first setpoint among those that
specify the same action, guaranteeing that there will not
be repeated records related to the same time.
Time-tagged setpoint events can be recorded to the Event
log if you put the corresponding action to the setpoint
action list.
If you select to record setpoint operations into the Event
log, define in the action target box which transition events
you want to be recorded: when the setpoint is operated,
when it is released, or both events. The Event recorder
puts into a log file a separate record for each active
trigger caused a setpoint status transition, and a separate
record for each action done on the setpoint activation
(except for logging actions that are not recorded to the
Event log).
If you run a number of recorders from the same setpoint
action list, it is recommended that you put the Event log
action before others in order to allow other recorders to
use the event sequence number given to the event by the
Event recorder.
General Meter Setup
87