vars_access.h

电路仿真程序 Classic Ladder is coded 100％ in C.It can be used for educational purposes or anything you wan

void InitVars(int, char**); //MAT needs argc and argv (29.1.2003)
int ReadVar(int TypeVar,int Offset);
void WriteVar(int TypeVar,int NumVar,int Value);

int AllocVars(void);
void FreeVars(void);

/* these are only useful for the MAT-connected version */
void DoneVars(void);
void CycleStart(void);
void CycleEnd(void);