Siemens SIMATIC S7 - Page 55

SIEMENS AG PRODAVE S7
Toolbox for Data Link PGs/PCs to SIMATIC S7
51
C-Adapter
int as200_mix_read (void* data, void* buffer);
Example:
Input byte 0, output byte 3 and variable memory bytes 5 and 6 are read and the
values are stored in variables e, a v5 and v6.and d:
C-Adapter
#include <w95_s7.h>
#pragma pack(1)
typedef struct {
char typ;
char size;
int dbno;
int no;
} data_type;
data_type data[10];
#pragma pack()
char buffer[100];
char e,a,v5,v6;
int v;
int error;
:
:
data[0].typ = 'e'; /* eingangsbyte 0 */
data[0].size= 'b';
data[0].no = 0;
data[1].typ = 'a'; /* ausgangsbyte 3 */
data[1].size= 'b';
data[1].no = 3;
data[2].typ = 'v'; /* variablen speicher byte 5 */
data[2].size= 'b';
data[2].no = 5;
data[3].typ = 'v'; /* variablen speicher byte 6 */
data[3].size= 'b';
data[3].no = 6;
data[4].typ = 0; /* endekennung der liste */
error = mix_read(data,buffer);
e = buffer[0];
a = buffer[1];
v5= buffer[2];
v6= buffer[3];
: