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Electro Industries/Gauge Tech
Doc # E134-7-15 V1.01
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Heartbeat Pulse:
Energy indicator on the face of the Nexus 1252; pulses are generated per the
programmed Ke value.
Infrared Test Pulse:
Energy indicator located on the upper left side of the face of the Nexus 1262
/1272 meter; pulses are generated per the programmed Ke value.
Integer:
Any of the natural numbers, the negatives of those numbers or zero.
Internal Modem:
An optional modem within the meter’s enclosure that connects to the RJ-11
telephone connector.
Invalid Register:
In the Nexus Modbus Map there are gaps between Registers. For example, the
next Register after 08320 is 34817. Any unmapped Register stores no
information and is said to be invalid.
ITIC Curve:
An updated version of the CBEMA Curve that reflects further study into the
performance of microprocessor devices. The curve consists of a series of steps
but still defines combinations of voltage magnitude and duration that will cause
malfunction or damage.
Ke:
kWh per pulse; i.e. the energy.
kWh:
kilowatt hours; kW x demand interval in hours.
KYZ Output:
Output where the rate of changes between 1 and 0 reflects the magnitude of a
metered quantity.
Last/Next Energy:
Register written to with the next energy reading for a channel. The register can
be read from to see the last energy reading written.
LCD:
Liquid Crystal Display.
LED:
Light Emitting Diode.
Master Device:
In Modbus communication, a Master Device initiates and controls all
information transfer in the form of a Request Packet to a Slave Device. The
Slave reponds to each request.
Maximum Demand:
The largest demand calculated during any interval over a billing period.
Minimum Pulse
Minimum time between transitions, which is measured in centiseconds
Width
(0-2.55 sec).
Modbus ASCII:
Alternate version of the Modbus protocol that utilizes a different data transfer
format. This version is not dependent upon strict timing, as is the RTU version.
This is the best choice for telecommunications applications (via modems).
Summary of Contents for I/O Module
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