Siemens SIMATIC S7 Operating Instructions Manual page 48

SIEMENS AG
Example:
Output byte 0..9 is read and saved in "buffer".
C-Adapter
#include <w95_s7.h>
int error;
adr_table_type plc_adr_table[2] = { {2,0,2,0},{0,0,2,0} };
#pragma pack(1)
unsigned char buffer[10];
#pragma pack()
:
error = load_tool(1,"S7ONLINE",plc_adr_table);
:
error = as200_a_field_read(0,10,buffer);
:
error = unload_tool();
:
Toolbox for Data Link PGs/PCs to SIMATIC S7
44
PRODAVE S7