PD00E0XKNXFI00020100_HANDBOOK_EN.DOCX
PD00E0xKNX KNX PRESENCE DETECTORS RANGE Handbook
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CCIAA Milano 148549
39/46
Expression
Logic expression can be used to implement custom
logic and arithmetic operation between values
received on the KNX bus.
The logic expression has 5 objects: 4 inputs and 1
output. The scheme of logic expression is as follows:
Inputs (A, B, C, D) and output (OUT) objects
The datapoints can be configured through an ETS
parameter:
bit
unsigned byte
signed byte
unsigned 2 bytes
signed 2 bytes
float 2 bytes (eg. temperature, humidity, ...)
unsigned 4 bytes
signed 4 bytes
float 4 bytes (eg. power, energy, ...)
Text expression
Configurable through an ETS parameter of 16
(maximum) character string. The output of the
logic is the arithmetic evaluation of this expression.
Inputs objects can be accessed through their letters
(A, B, C, D), the result is sent to the delay block.
Permitted operands:
"+"
arithmetic sum
"-"
arithmetic subtraction
"*"
arithmetic multiplication
"/"
arithmetic division
"&"
logic AND
"|"
logic OR
"^"
logic XOR
"!"
logic NOT
greater than
less than
equal to
ternary conditional
"(" and ")"
grouping operands
Ternary conditional:
<
condition
> ? <
expression1
> : <
expression2
>
Where:
condition
is the expression to be evaluated.
expression1
is evaluated when
condition
is TRUE
expression2
is evaluated when
condition
is FALSE
expression1
or
expression2
Expression examples:
"(A+B+C)/3"
calculate the mean of the A, B, C
objects
"A*9/5+32"
convert object A Celsius degrees to
Fahrenheit degrees
convert object A KW to W
convert object A m/s to Km/h
Quotation marks must not be included in
expressions
If wrong or unrecognized characters are used
in expression then it will be not processed and
discarded..
20.
Circadian rhythm function
The circadian rhythm function allows you to
perform continuous color temperature control with
lamps that manage the color temperature or, more
simply, the Warm and Cold components of the
white light. This management is called HCL (Human
Centric Light).This function is available on the
devices in the STANDARD, MULTI and SPACE
versions.
The working principle
The principle of HCL lighting management is to
provide human-friendly room lighting that differs
according to the time of day. the mix of warm and
cold light (dynamic white) must follow the
biological rhythm of the people who live or work in
the rooms.
IN 4
LOGIC
FUNCTION
DELAY
CYCLIC
IN 1
IN 2
OUT
2
IN 3