Honeywell VRX180 - Manual (Page 120)

Programming Function Blocks and Features
Video Recorder – User Manual 106
4.12 Program Calculated Values
A Calculated Value (CV) is a data point whose value is derived from calculations involving other data
points. The CV Output can be analog or discrete. A CV can include other CVs in its calculations. Once a
CV is created, it can be used by any function block as many times as desired.
Select "CALCULATED VALUES" on the Main Program Menu. Select a CV to program, then choose
from the types shown in
Table 4-16 .
ATTENTION
•
If you plan to program another function block using a Calculated Value as a parameter, you must program
the Calculated Value first.
•
Once you change the type and press Enter, the previous type’s settings are deleted and cannot be
recovered.
•
If your unit has the "standard math" package, you still have access to "advanced math" package types but
the fields will be blank and unaccessible.
Table 4-16 CV Types
Type Math
Package Description Page
NONE No CV Programmed --
PEAK PICKING A Picks maximum input value 107
SIGNAL SELECT A Selects signal per your criteria 108
COMPARE A Compares input and outputs result 109
COUNTER A Counts transitions of input status 113
MATH S Calculates math on 8 inputs using one operator 114
FREE FORM MATH S Calculates math on 8 inputs using several operators 115
LOGIC S Outputs logic of inputs 117
FREE FORM LOGIC S Outputs logic of inputs using custom equation 119
INVERTER S Inverts status of input 120
BCD S Binary Coded Decimal conversion 121
FUNCTION
GENERATOR A Generates custom y = f(x) curve 123
INTERVAL TIMER A Counts time in minutes 125
PERIODIC TIMER S Generates periodic pulse 126
MASS FLOW A Calculates mass flow with square root 128
CARBON
POTENTIAL A Generates a %C value 129
RELATIVE
HUMIDITY A Calculates relative humidity 131
STERILIZATION A Calculates F
0
Sterilization 132
ADV SPLITTER A Splits input into 3 outputs 133
STD SPLITTER A Splits input into 2 outputs 135
SCALING A Scales input to output 136
SIGNAL CLAMP A Clamps input to specified values 137
1 PT BLOCK AVG A Averages one input 138
ROLLING AVG A Computes rolling average of one input 139
MULTIPLE AVG A Averages multiple inputs 140
CEM BLOCK AVG A Averages one input over specified intervals 141
CEM ROLLING AVG A Computes rolling average of one input over specified intervals 142
S: Standard Math package
A: Advanced Math package
Refer to the page shown for the desired CV programming procedures. Press Enter when the "PRESS
ENTER TO SAVE" prompt appears to save your entries made during the session.