OSCAT Forum

oscat.lib => oscat.lib fuer PC WorX/MULTIPROG => Thema gestartet von: fcamisa am 04. November 2012, 16:57:16

Titel: FRMP_B module dependencies
Beitrag von: fcamisa am 04. November 2012, 16:57:16

Hi,

I am trying to port OSCAT Building Automation to my PLC (made by B&R Automation).

In the module FRMP_B i find:

Code: [Auswählen]

IF TD < TR THEN
FRMP_B := MIN(DWORD_TO_BYTE(SHL(TIME_TO_DWORD(TD), 8) / TIME_TO_DWORD(TR)), SEL(DIR, START, BYTE#255 - START));
There is a refernce to two modules:
- SHL
- SEL
which I cannot find in OSCAT basic and/or OSCAT BA.

I was wondering if they are PLC specific or I am missing something.

Thanks in advance

Francesco

Titel: Re: FRMP_B module dependencies
Beitrag von: peewit am 04. November 2012, 17:14:10

SEL(A,B,C);      if a=0 output B if A=1 output C
SHL(IN:=A,N:=B);   shift left value A of length B bits

-> standard iec 61131 functions (not a part from oscat)