Name: Siemens SIMATIC S7
Brand: Siemens
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SIEMENS AG PRODAVE S7

Toolbox for Data Link PGs/PCs to SIMATIC S7

3.5 Linking to Standard Tools

3.5.1 PRODAVE under Delphi (32-Bit) Example

To enable you to use the PRODAVE functions under Delphi, they must be

declared as follows:

function Load_tool ( no:Byte;

name: {pointer} PChar;

adr:{pointer} PChar): longint;

stdcall;

external ´w95_s7.dll´ name ´load_tool´;

function DB_read ( dbno: longint;

dwno: longint;

var amount: longint;

var buffer): longint

stdcall;

external ´w95_s7.dll´ name ´db_read´;

function Unload_tool: longint;

stdcall;

external ´w95_s7.dll´ name ´unload_tool´;

Example:

var

plc_adr_table : array [0..15] of byte;

name:array[0..255] of char;

res ,amount: longint;

buffer : array[0..255] of word;

plc_adr_table[0] := 2; {address}

plc_adr_table[1] := 0; {segment id}

plc_adr_table[2] := 2; {racktno}

plc_adr_table[3] := 0; {slotno}

plc_adr_table[4] := 0;

strcopy(name,'S7ONLINE');

res := Load_tool(1,addr(name),addr(plc_adr_table[0]));

res := DB_read(10,0,amount,buffer);

res := Unload_tool;

Siemens SIMATIC S7 Operating Instructions

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