Lenze PLC Designer PLC Designer (R2-x) Instrukcja Użytkownika Pobierz pdf (Strona 655)

L-force | PLC Designer

PLC Designer Libraries

 DMS 3.2 EN 02/2011 TD29 653

Declaration example:

CTDInst : CTD ;

Example in IL:

CAL CTDInst(CD := VarBOOL1, LOAD := VarBOOL2, PV :=

LD CTDInst.Q

LD CTDInst.CV

Example in FBD:

Example in ST:

CTDInst(CD:= VarBOOL1, LOAD:=VarBOOL2 , PV:= VarINT1);

VarBOOL3 := CTDInst.Q ;

VarINT2 := CTDInst.CV;

Provided by standard.lib.

Function Block Incrementer/Decrementer

The input variables CU, CD, RESET, LOAD as well as the output variables QU and QD

are type BOOL, PV and CV are type WORD.

If RESET is valid, the counter variable CV will be initialized with 0. If LOAD is valid, CV

will be initialized with PV.

If CU has a rising edge from FALSE to TRUE, CV will be raised by 1. If CD has a rising

edge from FALSE to TRUE, CV will be lowered by 1 provided this does not cause the

value to fall below 0.

QU returns TRUE when CV has become greater than or equal to PV.

Lenze PLC Designer PLC Designer (R2-x) Instrukcja Użytkownika Strona 655