求助 S7—200 子程序块 点击：1804 | 回复：10
发表于：2002-05-20 23:54:00
9楼
I can write in English only because my Chinese platform crashed. For your reference following is a example of function with parameters and how to call this function and pass parameter values from another function.
//Function with input and output parameters
FUNCTION FC 1 : VOID
TITLE = Test sample 1
VAR_INPUT
xxx : INT;
END_VAR
VAR_OUTPUT
yyy : CHAR;
END_VAR;
VAR_IN_OUT
zzz : BOOL;
END_VAR;
BEGIN
NETWORK
......
END_FUNCTION
//Call a function with parameters
FUNCTION FC 2 : VOID
TITLE = Test sample 2
BEGIN
NETWORK
TITLE = Calling a function with parameters
CALL FC 1 (
xxx := 123,
yyy := a_char_variable,
zzz := a_bool_variable);
NOP 0;
NETWORK
........
END_FUNCTION
In STEP 7 it is simpler. If you can write LAD program, in Variable Declaration Table you just give the names and datetype of input and output variables. You can use these variables in this program(function). In another program to call this function you just insert a Program Elements-->FC blocks-->FC1. Then all function parameters are displayed. Be carefull, datatype of variables or values you pass to parameters must match with datatype of parameters.
热门招聘
相关主题
- plc晶体管输出和继电器输出分...
[32959] - 求助简单的交通灯控制程序！！...[18721]
- 用PLC输出口显示4位数码的硬...[9965]
- 献给初学者之AB_PLC及网络通...[16427]
- 0.1秒摧残任何版本威纶禁止反...[13043]
- 解读三菱程序[10928]
- 手机能控制PLC吗?[9820]
- 步进电机抖动但不转[7914]
- D寄存器和R寄存器有什么区别...[10022]
- 工控TV视频教程精选-100320更...[42382]
官方公众号
智造工程师
-
客服
-
小程序
-
公众号
工控网智造工程师好文精选
