PRIO_4BO: Priority range converter to 4 boolean

The function block PRIO_4BO [FB419] converts parameterizable priority ranges to boolean output signals. One to four priority ranges can be parameterized.

When the input value on K [1...17] is within a parameterized priority range, the corresponding output Outx will be set true.

This function calls TIME_TCK[] function to get current timer value.

Block specification

K (Selector): K selects which priority range is active and accordingly the corresponding Out1...4 will be set true.

Inputs (Priority ranges): One to four priority ranges can be defined by the SwiOnPt1...4. If necessary an additional SwoOffPt can be defined.

Outputs: Out1...4 will be set exclusively true, that means only one of the outputs can be true at the same time.

Switch-off point: The parameterization of the SwiOnPts and SwiOffPt will be checked if it is valid.

Valid: The input value K will be ckecked if it is in valid range [1...17]

Inputs

Pin	E	O	Description
K	pa		Selector According the defined priority ranges K selects which output (Out1...4) has to be set true.
SwiOnPt1...4	pax		Switch-on point The SwiOnPt1...4 can be used to define one to four priority ranges to be converted to the outputs Out1...4. The SwiOnPt defines the switch on point fort the outputs Out1...4. The SwiOnPt can be parameterized by enum values 1...17. In case the SwiOnPt is not used to define a priority range it must be set to 255 "undefined".
SwiOffPt	pax		Switch-off point The SwiOffPt can be used additionally to define a switch off point. The SwiOffPt can be parameterized by enum values 1...17. In case the SwiOffPt is not used it must be set to 255 "undefined"

Outputs

Pin	E	O	Description
OutK	a		OutK indicates directly the value of K.
Out1...4	a	R	Out1...4 indicates which priority range is active.
Valid	a		Valid indicates if the priority ranges are parameterized correctly, and if K is within a valid value 1...17.

Pin data

Pin	Description	Data type	Default value	E.g. Engineering unit or Text group	Min.	Max.	Pin type
K	Selector	Int	True		-32767	+32768	In
SwiOnPt1...4	Switch-on point 1..4	Int	255 "undefined"	Enum	1	17 or 255 "undefined"	In
SwiOffPt	Switch-off	Int	255 "undefined"	Enum	1	17 or 255 "undefined"	In
OutK	Output selector	Int	0		-32767	+32768	Out
Out1...4	Output 1...4	Boolean	False	True/False	0	1	Out
Valid	Valid information related to output signal	Boolean	0	No/Yes	0	1	Out

Application—Example 1

Three priority ranges configured to be converted to Out1...3

Application—Example 2

Four priority ranges and SwiOffPt configured to be converted to Out1...4

Start-up response/trouble shooting

On start-up the block calculates the output values depending on the input values.