Micromod Micro-DCI: 53SL6000 Single Loop Controller - Manual (Page 54)

• When engineer mode is exited and run is se-
lected, the setpoint will move to the assigned
value for the duration of its corresponding time
interval.
• To view the stepped sequence manually, ac-
cess the StEP parameter in the oPEr menu in
engineer mode.
•
After StEP is selected, the current time interval
number flashes in the red dro.
• Use the scroll forward/backward push buttons
to select a new time interval.
•
After pressing the enter push button, the set-
point will jump to a new value corresponding to
the time interval number entered.
Time Interval Time Duration Setpoint Value
1 1.0 52.0
2 2.0 70.0
3 1.0 70.0
4 3.0 50.0
5 1.0 30.0
6 3.0 100.0
7 2.0 90.0
8 2.0 90.0
9 3.0 65.0
10 2.0 35.0
11 3.0 25.0
12 2.0 25.0
13 4.0 10.0
6.2.4 DtoA Mode
In digital-to-analog mode, the logical values of digi-
tal inputs B and C are converted into a repre-
sentative analog output value. The analog value is
based on the duration of a logical one value on
either input and constants K1 through K4.
When the B input value is a logical one, the charac-
terizer’s analog output value will ramp up at the
rate set by K1 in units/second. When the C input
value is a logical one, the characterizer’s analog
output value will ramp down at the rate set by K2 in
units/second. The analog output value is kept be-
tween the lower and upper limits set in K3 and K4
respectively. Whenever the analog output value is
being limited, the digital output will be a logical one;
otherwise, it is a logical zero.
The figure below illustrates the relationship be-
tween the digital inputs and resulting analog out-
put. The logic output limiting indicator is also
shown in the figure.
6.3 Math Function Block
The math function block (shown below) allows the
user to choose one of nine algebraic equations with
the ProG-Fnc-Fnc.M parameter. These equations
are provided to meet a wide range of application
requirements. Depending on the equation se-
lected, up to four analog inputs (A - D), two digital
inputs (E and F), and six constants (K1 - K6) are
used to generate the analog and digital outputs.
The path connection parameters (Fnc.A - Fnc.F)
allow the user to choose inputs from a variety of
analog and digital sources, and align them as re-
quired in the fixed equation positions to obtain the
desired outputs.
Table 6-2 summarizes the ProG-Fnc module pa-
rameter selections for the math function block. The
equations with brief descriptions follow the table.
Micro-DCI  53SL6000 Controller
6-4