FB_BA_ContStp

The function block FB_BA_ContStp determines the resulting control steps of a multi-level aggregate, depending on the continuous input signal fIn.

nActiveStep	nNumOfStep	fSwiOn	fSwiOff	nRemTiDlyOn	nRemTiDlyOff	bQ01	bQ02	bQ03	bQ04	bQ05	bQ06	bQ07	bQ08
0	0	fSwiOn01	fSwiOn01 - fHys01	nDlyOn01		FALSE	FALSE	FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
1	> = 1	fSwiOn02	fSwiOn01 - fHys01	nDlyOn02	nDlyOff01	TRUE	FALSE	FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
2	> = 2	fSwiOn03	fSwiOn02 - fHys02	nDlyOn03	nDlyOff02	TRUE	TRUE	FALSE	FALSE	FALSE	FALSE	FALSE	FALSE
3	> = 3	fSwiOn04	fSwiOn03 - fHys03	nDlyOn04	nDlyOff03	TRUE	TRUE	TRUE	FALSE	FALSE	FALSE	FALSE	FALSE
4	> = 4	fSwiOn05	fSwiOn04 - fHys04	nDlyOn05	nDlyOff04	TRUE	TRUE	TRUE	TRUE	FALSE	FALSE	FALSE	FALSE
5	> = 5	fSwiOn06	fSwiOn05 - fHys05	nDlyOn06	nDlyOff05	TRUE	TRUE	TRUE	TRUE	TRUE	FALSE	FALSE	FALSE
6	> = 6	fSwiOn07	fSwiOn06 - fHys06	nDlyOn07	nDlyOff06	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	FALSE	FALSE
7	> = 7	fSwiOn08	fSwiOn07 - fHys07	nDlyOn08	nDlyOff07	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	FALSE
8	8	fSwiOn08	fSwiOn08 - fHys08		nDlyOff08	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE	TRUE

Inputs

VAR_INPUT
  bEn         : BOOL;
  fIn         : REAL;
  fSwiOn01    : REAL;
  fSwiOn02    : REAL;
  fSwiOn03    : REAL;
  fSwiOn04    : REAL;
  fSwiOn05    : REAL;
  fSwiOn06    : REAL;
  fSwiOn07    : REAL;
  fSwiOn08    : REAL;
END_VAR

Name	Type	Description
bEn	BOOL	General enable of the function block. If bEn is FALSE, all message outputs bQ0N are also FALSE.
fIn	REAL	Continuous input value from which the switching states are derived.
fSwiOn0N	REAL	Switch-on point step 0N.

Inputs CONSTANT PERSISTENT

VAR_INPUT CONSTANT PERSISTENT
  fHys01       : REAL := 5;
  fHys02       : REAL := 5;
  fHys03       : REAL := 5;
  fHys04       : REAL := 5;
  fHys05       : REAL := 5;
  fHys06       : REAL := 5;
  fHys07       : REAL := 5;
  fHys08       : REAL := 5;
  nDlyOn01     : UDINT;
  nDlyOff01    : UDINT;
  nDlyOn02     : UDINT;
  nDlyOff02    : UDINT;
  nDlyOn03     : UDINT;
  nDlyOff03    : UDINT;
  nDlyOn04     : UDINT;
  nDlyOff04    : UDINT;
  nDlyOn05     : UDINT;
  nDlyOff05    : UDINT;
  nDlyOn06     : UDINT;
  nDlyOff06    : UDINT;
  nDlyOn07     : UDINT;
  nDlyOff07    : UDINT;
  nDlyOn08     : UDINT;
  nDlyOff08    : UDINT;
  nNumOfStp    : UDINT := 4;
END_VAR

Name	Type	Description
fHys0N	REAL	Absolute value hysteresis step 0N.
nDlyOn0N	UDINT	Start-up delay step 0N.
nDlyOff0N	UDINT	Switch-off delay step 0N.
nNumOfStp	UDINT	Input of the number of steps required. The input is limited to a range from 0 to 8.

Outputs

VAR_OUTPUT
  bQ01           : BOOL;
  bQ02           : BOOL;
  bQ03           : BOOL;
  bQ04           : BOOL;
  bQ05           : BOOL;
  bQ06           : BOOL;
  bQ07           : BOOL;
  bQ08           : BOOL;
  nActiveStep    : UDINT;
  fSwiOn         : REAL;
  fSwiOff        : REAL;
  nRemTiDlyOn    : UDINT;
  nRemTiDlyOff   : UDINT;
END_VAR

Name	Type	Description
bQ0N	BOOL	Shows state step 0N. The step can only be active when the preceding steps are TRUE. TRUE = ON; FALSE = OFF
nActiveStep	UDINT	Indicates how many steps are switched on.
fSwiOn	REAL	Indicates the next switch-on point.
fSwiOff	REAL	Indicates the next switch-off point.
nRemTiDlyOn	UDINT	If the switch-on point for switching to the next step is reached, the remaining time of the start-up delay is displayed here.
nRemTiDlyOff	UDINT	If the switch-off point for switching down to the next step is reached, the remaining time of the switch-off delay is displayed here.

Requirements

Development environment	Required PLC library
TwinCAT from v3.1.4024.22	Tc3_BA2 from v5.2.5.0