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siemens 300/400编程技巧3则 S7 300400 的一些功能和技巧1 数据块拷贝 FUNCTION FC 100 : VOID TITLE = //DB BLOCK COPY AUTHOR : AXG NAME : DBBTODBB VERSION : 0.1 VAR_INPUT SOU_DB : INT ; //SOURCE DB NUMBER LENG : INT ; //HOW MANY TO COPY DES_DB : INT ; //DESTINATION DB NUMBER END_VAR VAR_TEMP SOURCE : ANY ; DEST : ANY ; END_VAR BEGIN NETWORK TITLE = LAR1 P##SOURCE; // Load the start address of the ANY pointers in AR1. L B#16#10; // Load the syntax ID and T LB [AR1,P#0.0]; // transfer it to the ANY pointer. L B#16#4; // Load data type WORD and T LB [AR1,P#1.0]; // transfer it to the ANY pointer. L #LENG; // Load HOW MANY WORDS and T LW [AR1,P#2.0]; // transfer them to the ANY pointer L #SOU_DB; // Source is DB[?], DBB0.0 T LW [AR1,P#4.0]; // L P#DBX 0.0; // T LD [AR1,P#6.0]; // LAR1 P##DEST; //Load the DESTINATION address of the ANY pointer in AR1. L B#16#10; //Load the syntax ID and T LB [AR1,P#0.0]; //transfer it to the ANY pointer. L B#16#4; //Load data type WORD and T LB [AR1,P#1.0]; //transfer it to the ANY pointer. L #LENG; //Load HOW MANY WORDS and T LW [AR1,P#2.0]; //transfer them to the ANY pointer. | |
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