Configuring Digital Inputs - Satec Expertmeter EM720 Operation Manual

Chapter 5 Configuring the EM720

Configuring Digital Inputs

Parameter
Pulse input mode
Pulse polarity
EM720 Power Quality and Revenue Meter
The EM720 has four embedded digital inputs ((DI1 to DI4)
and supports up to two expansion 2DI/2DO modules with
a total of 4 digital inputs (DI5 to DI8). I/O numbers are
automatically assigned to the inputs in the order of
connection. If you insert an I/O module into another slot
position and do not change its order, then all digital inputs
on the module retain their I/O numbers.
To configure the digital inputs in your meter, select the
device site from the list box on the PAS toolbar, select
General Setup from the Meter Setup menu, and then click
on the Digital Inputs tab. The digital inputs that are not
present in your device are designated as not available.
The available options are shown in the following table.
Options Default
PULSE MODE PULSE
MODE
KYZ MODE
NORMAL (N.O.) NORMAL
INVERTING
(N.C.)
General Meter Setup
Description
Pulse mode: either leading, or trailing
edge of the input pulse is recognized as
an event.
KYZ mode: both leading and trailing
edges of the input pulse are recognized
as separate events.
Normal polarity: the open to closed
transition is considered a pulse.
Inverting polarity: the closed to open
transition is considered a pulse. It has no
meaning in KYZ mode where both
transitions are effective.
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