Honeywell VRX180 user manual Program Calculated Values, CV Types, Type Math Description Package

Programming Function Blocks and Features

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	Description	Page
	Package
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	A	Generates custom y = f(x) curve	123
GENERATOR
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	A	Generates a %C value	129
POTENTIAL
RELATIVE	A	Calculates relative humidity	131
HUMIDITY
STERILIZATION	A	Calculates F0 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.

106 Video Recorder – User Manual