Technical data

Creating STL Source Files
13.7 Examples of STL Source Files
Programming with STEP 7
Manual, 05/2010, A5E02789666-01 303
AUTHOR : Siemens
FAMILY : Throughput check
NAME : INCR_ITEM_NOS
VERSION : 1.0
VAR_IN_OUT
ITEM_NOS {S7_visible := 'true'}: INT; // No. of items currently manufactured
//System attributes for parameters
END_VAR
BEGIN
NETWORK
TITLE = Increment number of items by 1 // As long as the current number of items lies below 1000,
// the counter can be increased by 1
L ITEM_NOS; L 1000; // Example for more than one
> I; JC ERR; // statement in a line.
L 0; T RET_VAL;
L ITEM_NOS; INC 1; T ITEM_NOS; BEU;
ERR: L -1;
T RET_VAL;
END_FUNCTION