Operation: CP1SD/T/L Version
CENTRON® Polyphase Meter Technical Reference Guide
47
Values calculated in Test Mode are not added to previous billing values or stored for
retrieval. After exiting Test Mode, all billing data previously transferred to non-volatile
memory is retrieved, an end-of-interval (EOI) is initiated, and a new demand interval
begins.
Any time-related activities, such as TOU rate changes or Daylight Savings Time (DST)
changes that occur while the meter is in Test Mode, are performed upon exiting Test Mode.
Test Alternate Display Mode
Test Alternate Mode is functionally identical to Test Mode. To enter Test Alternate Mode,
press the Test switch a second time. The “TEST” and “ALT” annunciators will be
displayed. The meter will return to Normal Mode at the completion of Mode Time-out.
Diagnostic Displays
The user may program the behavior that the meter should exhibit for every specific error
condition. The possible actions in order of increasing severity are to ignore the error (do not
display the error code); scroll its error code (an error code is automatically displayed after
each display item); or lock the display, showing only the error code (do not display anything
else).
Registers
There are five register types in the D/T/L Register: Energy, Demand, Instantaneous, Self
Read (or Snapshot), and Information.
Energy Registers
The D/T/L Register can measure numerous energy quantities (as shown in the table below)
from which the user can configure any eight to be registered.
Measured Energy
Quantity Type
Phases
Directions
watt-hours aggregate
delivered
received
net
uni-directional
Varhours aggregate
delivered
received
net
net delivered
net received
Q1, Q4
