1、问: 如何触发计算机扬声器的声音?
答: 编写如下C-Action: #pragma code("kernel32.dll"); BOOL Beep(DWORD dwFreq,DWORD dwDuration); #pragma code(); Beep(500,500);
2、问: 如何通过C脚本来确定报警信息?
答: 首先必须在画面中插入报警控件,可以用如下两种方式来确认信息:
(1)、确认单条信息 4版本和高于此版本的WinCC BOOL OnBtnSinglAckn(char*lpszPictureName,char*lpszObjectName) 5版本和高于此版本的WinCC BOOL AXC_OnBtnSinglAckn(char*lpszPictureName,char*lpszObjectName)
(2)、确认报警窗口所有可见的报警 4版本和低于此版本的WinCC BOOL OnBtnVisibleAckn(char*lpszPictureName,char*lpszObjectName) 5版本和高于此版本的WinCC BOOL AXC_OnBtnVisibleAckn(char*lpszPictureName,char*lpszObjectName)
3、问: 如何在WinCC中读取系统时间?
答: 通过如下C-Action: #pragma code("kernel32.dll"); Void GetLocalTimes(SYSTEMTIME*lpst); #pragma code(); SYSTEMTIME time; GetLocalTime(&time); SetTagWord("Varname",time.wYear); SetTagWord("Varname",time.wMonth); SetTagWord("Varname",time.wDayOfWeek); SetTagWord("Varname",time.wDay); SetTagWord("Varname",time.wHour); SetTagWord("Varname",time.wMinute); SetTagWord("Varname",time.wSecond); SetTagWord("Varname",time.wMilliseconds);
4、问: 如何经Windows对话框设置日期时间?
答: 通过调用Windows对话框实现。具体如下: #i nclude"apdefap.h" void onClick(char*lpszPictureName,char*lpszObjectName, char*lpszPropertyName) {ProgramExcute("c:\\win98\\control.exe timedate.cpl");} 其中执行的程序路径,需根据具体情况填写。 5、问: 如何在WinCC中调用SQL语言?
答: 1、创建一个 SQL文件,此文件在ISQL中建立,文件内包含所要执行的SQL语句。Windows对话框实现。具体如下:
2、在WinCC中用C Script 调用上述SQL文件,如下所示: #i nclude"apdefap.h" void OnLButtonDown(char* lpszPictureName, char* lpszObjectName, char* lpszPropertyName, UINT nFlags,int x,int y) { char*a="c:\\siemens\\common\\SQLANY\\ISQL-q-b-c UID=DBA;PWD=SQL;DBF=E:\\testsql\\testsqlRT.DB; DBN=CC_testsql_99-12-03-12:48:26R;READ E:testsql\\test.sql"; Printf("%s\r\n",a); ProgramExcute(a); } 下面是一个简单的SQL文件内容: select *from pde#hd#t#test; output to e:\\test2.txt FORMAT ascii 注意:文件名及路径中不要带空格。
6、问: 如何整点启动归档?
答: 在"Globle Script"下的Project function编写程序函数:cyclicarchive BOOL cyclicarchive() { #pragma code("kernel.dll"); void GetLocalTime(SYSTEMTIME*lpsz); #pragma code(); SYSTEMTIME time; Int t1; GetLocalTime(&time); T1=time.wMinute; If(t1==00) { SetTagBit("startarchive",1); Return(BOOL) (GetTagBit("startarchive")); } } 在Tagloging中的"Properties of process tag"中的"archive tag"Tab下的Archive type选择Cycle-selective,在"Event"标签下的"StartEvent"内选择cyclicarchive函数。
7、问: How can I set and reset a WinCC variable by mouse click with C script?
答: The following function shows how you can alternately set and reset a WinCC variable by mouse click. #i nclude "apdefap.h" void OnClick(char* lpszPictureName, char* lpszObjectName, char* lpszPropertyName) { BOOL z; z=GetTagBit("MyBitVariable"); if (z==0) SetTagBit("MyBitVariable",1); else SetTagBit("MyBitVariable",0); }
8、问: How can I program a waiting function (Sleep) in WinCC?
答: The following sample program shows how the "Sleep" is used. #pragma code("Kernel32.dll") void Sleep(int milliseconds); #pragma code() Sleep(1000); //time specification in milliseconds Warning: If you use Sleep(), processing the C script is interrupted for the time indicated. Requests for the interrupted function cannot be processed during this time.
9、问: How can I output a SIMATIC timer minutes and seconds in WinCC?
答: If you want to output a SIMATIC Timer in minutes and seconds in WinCC, then in WinCC please use a static text in the Graphics Designer to which you interface the following action: char* _main(char* lpszPictureName, char* lpszObjectName, char* lpszPropertyName) { char *p; DWORD hilf; int min, sec; p=SysMalloc(10); hilf=GetTagDWord("Time"); min=hilf/60000; sec=hilf%60000/1000; sprintf(p,"%d min %d sec",min,sec); return p; } The "Time" variable linked to the I/O field must have the following properties: ?Data type "32-bit value without sign" ?Format adaptation "DwordToSimaticBCDTimer" ?Address: data area "Times" and addressing "Word"
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