Siemens Simantic Net NCM for Industrial Ethernet S7 User Manual

Page 159

Programming FCs (Functions) and FBs for S7 Ethernet CPs

159

SIMATIC NET NCM S7 for Industrial Ethernet
C79000-G8976-C129–06

Example of AG_SEND

Below you will find an executable example of an FC5 (AG_SEND) call and
parameter evaluation.

The OB100 listed below belongs to the FC100 selected here in which the send call
takes place; OB100 sets the ACT bit correctly when the CPU starts up.

To function correctly, a DB100 with a size of at least 240 bytes must be loaded.

The program requires a CP at address 256 and a configured connection of the
type ISO Transport / ISO-on-TCP or TCP with ID=1 (please adapt your
configuration where necessary !).

//––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

FUNCTION FC 100: VOID

TITLE = SENDE_DEMO
AUTHOR : Tester

FAMILY : S7300

NAME : FC5_Demo

VERSION : 1.0

BEGIN

CALL FC 5 (

ACT

:= M100.0,

:= 1,

LADDR

:= W#16#100,

SEND

:= P#DB100.dbx0.0 BYTE 240,

LEN

:= 240,

DONE

:= M100.1,

ERROR := M100.2,
STATUS

:= MW102 );

//––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

R M100.0;
SET;

A M100.1;

JC done;

SET;

A M100.2;

JC err;

//
//

Reset parameter ACT for all further FC5 calls;

Test whether DONE = TRUE

Test whether ERROR = TRUE

BEU;

//
//

Neither DONE nor ERROR is set, the job is
still running.

done

S M100.0;
BEU;

//
//

Job completed without error. Set ACT = TRUE so
that the following call can trigger the new

job.

//–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––