TICcode.More about TIC code and Data Base format

Product : ISaGRAF V3

Date : 23-February-1996

File : TICcode.More about TIC code and Data Base format.htm

Subject : More explanations about TIC code and Data Base format

Keywords: TIC - SFC

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1) TIC code mapping for non SFC programs:

For non SFC programs or functions, the corresponding TIC code is mapped in just one sequence. The table described in data base document gives the list of entry points for each non SFC program or function. As for SFC actions, such a sequence is preceeded by a "step like" structure where the "begin" field is the only one significant, and contains the start address of the TIC code:

2) TIC instructions for FB calling

You have to distinguish the following FB types:

- user written functions in IEC languages

- standard embedded functions and function blocks

- user written functions and function blocks in C language

The passing of the input parameters to a function or function block is always made through one of the "param" TIC_P1? instructions.

The function or function block calling depends on the type of called object (user C or standard C, function or function block) such as defined in page 6. Calling a function written in IEC language is made through TIC instructions named TIC_A4? or TIC_OUT_A4?.

The "GET_PARAMETER" set of TIC instructions is used only in the body of a user function written in IEC language to get its inupt parameters. The "PUT_PARAMETER" set of TIC instructions is used only in the body of a user function written in IEC language to assign the return value of the function.

An important feature is that the ISaGRAF target kernel actually integrates a big list of embedded functions and function blocks, written in "C" (around 50 functions and 20 function blocks). The best would be, for a new target development, to provide the same set of embedded capabilities. All these functions and function blocks are only identified by an predefined index (used in TIC_SYS_???, TIC_STD_??? and TIC_STD_FBL instructions).

Below is the list of the functions and function blocks actually embedded in the ISaGRAF kernel:

system level functions

SYSTEM, OPERATE, REDGE, FEDGE

GSTATUS, GKILL, GSTART, GFREEZE, GRST

TSTART, TSTOP

cast functions (type conversion)

BOO, ANA, REAL, TMR, MSG

function blocks

DERIVATE, INTEGRAL

SIG_GEN, BLINK

HYSTER, AVERAGE, LIM_ALRM

RS, SR, R_TRIG, F_TRIG, SEMA

CTU, CTD, CTUD, CMP, STACKINT

TON, TOF, TP

math functions

ABS, EXPT, LOG, SQRT, TRINC, POW

COS ,SIN, TAN, ACOS, ASIN, ATAN

data handling functions

AND_MASK, OR_MASK, XOR_MASK, NOT_MASK

LIMIT, MIN, MAX, MOD, SEL, MUX4, MUX8, RAND, ODD

ROL, ROR, SHL, SHR

string handling functions

ASCII, CHAR, DAY_TIME

DELETE, INSERT, FIND, REPLACE, LEFT, RIGHT, MID, MLEN

array handling functions

ARCREATE, ARREAD, ARWRITE

file handling functions

F_ROPEN, F_WOPEN, F_CLOSE

FA_READ, FA_WRITE

FM_READ, FM_WRITE

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