Abs3P (FB)

FUNCTION_BLOCK Abs3P

Short Descritpion

Anti-blocking protection for a 3-point drive

Portrayal

Interfaces

Inputs

Name	Datatype	Range	Init-Value	Function
xFbOpen	BOOL			Message - Inbox - Plus
XFbClose	BOOL			Message - Input - Minus

Outputs

Name	Datatype	Range	Init-Value	Function
xOutOpen	BOOL			Enable - Output - Plus
xOutClose	BOOL			Enable - Output - Minus
xAbsOn	BOOL			Display - blocking protection process
dtAbsLastOn	DATE_AND_TIME			Startdate / -Timepoint of the last blocking protection process

Setpoints / Parameters

Name	Datatype	Range	Init-Value	Function
tMinRunTime	TIME		30s	Minimum operating time
tTime	TIME		120s	Time duration of the blocking protection process
eDay	eDoW		eDow.Montag	Weekday of blocking protection process
todStartTime	TOD		08:00:00 Uhr	Time point of the blocking protection process

Functional Description

General

This function block is used to monitor message inputs xFbOpen and xFbClose to activity. The test period covers 168 hours (= 1 week).

The message inputs xFbOpen and xFbClose are active, if they are continuously active during the minimum operating time tMinRunTime and also during the test period (only xFbOpen or only XFbClose or both).

The blocking protection process is thus stopped and the test time restarts.

If no activity was detected during the test period, the blocking protection process is triggered on the weekday eDay at todStartTime time.

At the same time, the test period starts again.

The active blocking protection process is split into two consecutive periods of time (Period 1 and Period 2)

In period 1, the combination Enable - Output xOutOpen = TRUE, Enable - Output xOutClose = FALSE is shown during the time duration tTime.

In period 2, the combination Enable - Output xOutOpen = FALSE, Enable - Output xOutClose = TRUE is shown during the time duration tTime.

The initial triggering of the blocking protection process can be delayed

depending on the relevant settings (weekday eDay and todStartTime)

Example

Testing period completed on Tuesday morning, start of the blocking protection process not until next Monday.

At the dtAbsLastOn output, the start date and the start time of the last blocking protection process are available.

Prerequisite for the use of the Abs3P functional component

For correct function, the use of the function block TimeRead with xEn = TRUE is mandatory.

Enable - Output xOutOpen

xFbOpen	Blocking protection process	xOutOpen	Notes
X	FALSE	FALSE	Blocking protection process inactive
X	TRUE	TRUE	Blocking protection process active - period 1
X	TRUE	FALSE	Blocking protection process active - period 2

Legend: X = any

Enable - Output xOutClose

xFbClose	Blocking protection process	xOutClose	Notes
X	FALSE	FALSE	Blocking protection process inactive
X	TRUE	FALSE	Blocking protection process active - period 1
X	TRUE	TRUE	Blocking protection process active - period 2

Legend: X = any

Display of the blocking protection process xAbsOn

This output is used to display an active blocking protection process (xAbsOn = TRUE).

Setpoint / Parameter eDay

The blocking protection function can be disabled by set the setting to eDay = eDoW.Inactive.

Sollwert / Parameter tTime

The blocking protection function can be disabled by set the setting to tTime = 0s.

Visualization

Information

Element	Authors	Date	Version	Notes
Function	Adam Bartod	11.2017	1.0	Initial version
Programming	Adam Bartod	11.2017	1.0	Initial version
Test	Jochen Reu	11.2017	1.0	Initial version
Documentation	Jochen Reu	11.2017	1.0	Initial version

Codesys

InOut:

Scope	Name	Type	Initial	Comment
Input	xFbOpen	BOOL		Message - Inbox - Plus
	xFbClose	BOOL		Message - Input - Minus
	tMinRunTime	TIME	TIME#30s0ms	Minimum operating time
	tTime	TIME	TIME#2m0s0ms	Time duration of the blocking protection process
	eDay	eDoW	eDow.Monday	Weekday of blocking protection process
	todStartTime	TOD	TIME_OF_DAY#8:0	Time point of the blocking protection process
Output	xOutOpen	BOOL		Enable - Output - Plus
	xOutClose	BOOL		Enable - Output - Minus
	xAbsOn	BOOL		Display - blocking protection process
	dtAbsLastOn	DT		Startdate / -Timepoint of the last blocking protection process

• Abs3P.mEx (METH)
  • Kurzbeschreibung Methode (AbsA.mEx)