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IQ DATA
Section 6
THEORY O F OPERATION
- This Section provides a general description
6.0 General
of how the IQ Data functions internally. Its purpose is to give
the user only an overview theory of operation.
- The IQ Data is controlled by a self
6.1 Basic Block
contained microprocessor which is directed by an "executive
program" resident in ROM (read-only memory). (See Figure
6.1.) The microprocessor directs the following 2 operations:
Monitoring the AC line voltage and currents and storing
•
their levels in a "data table" which is a solid state mem-
AC line
voltage
AC line
current
L
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n
e
Microprocessor
i
Executive
n
program
t
e
r
Data
f
table
a
c
e
Figure 6.1 - IQ Data Basic Block
ory device. (The actual signals from the AC line are "con
ditioned" by various circuits grouped together here and
referred to simply as the line interface. )
Updating the Operator Panel on a regular basis. When
•
a component of the Panel - such as the STEP Display
pushbutton- is pressed, the executive program reacts
by displaying the new information requested in the Dis
play Window.
I
n
t
e
r
f
a
c
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22
TO 172838
Operator
Panel
Components
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