class.h

moudbus通讯协议, moudbus通讯协议, moudbus通讯协议,

// This is a prototype class of all other LASAL classes.
// The LASAL compiler will take the method headers defined here as
// a prototype for all standard methods of all classes in the current project.

// Names and calling conventions can be changed by the user. The compiler
// will only assume the following order of functionalities:
// 
//	Method-No.	Default-Name	Function
//----------------------------------------------------------------------------------
//	1		Read		Reads the contents of the server channel
//	2		Write		Writes to a server channel
//	3*		Init		Initializes an object
//	4*		CyWork		low priority background work
//	5*		RtWork		high priority realtime work
//	6*		NewInstr	send interpreter commands to an object
//	7*		Kill		terminate all object activities
//	8*		GetState	observe execution of interpreter commands

// Remarks:   	*	these functions are only available for Server Channel Commands


#ifndef __CLASS__STANDARD__METHODS__
#define __CLASS__STANDARD__METHODS__

#include <RTOS_Globals.h>

#ifndef LASAL_VERSION
#include <RTOS_UNITS.h>
#else
#if LASAL_VERSION < 58
#include <RTOS_UNITS.h>
#endif//LASALVERSION < 58
#endif//LASAL_VERSION

CLASS
//[#ENGLISH]
// The 'Read' method provides the characteristic data 
// of a server channel. It's default implementation will
// return the contents of the channels 'dData'-element.
// So 'Read' can be called for each server.
//[<output(EAX)]a 4 byte return value
//[#DEUTSCH]
// Die 'Read'-Methode liefert die f黵 einen Kanal relevanten
// Daten zur點k. Ihre Standard-Implementierung liefert einfach
// den Inhalt des 'dData'-Elements des Kanals.
// 'Read' kann jedenfalls f黵 alle Kan鋖e aufgerufen werden.
//[<output(EAX)]Der 4-Byte-lange R點kgabewert
	FUNCTION VIRTUAL GLOBAL Read
		VAR_OUTPUT
			output(EAX)		: DINT; 	// data
		END_VAR;

//[#ENGLISH]
// The behaviour of the 'Write' method is not predefined.
// Usually it will be used to write data to the channel's
// 'dData'-element. This can be achieved by simply un-
// checking the 'write-protection'-flag in the method's
// context menu (right-click on 'Write').
// The default implementation of 'Write' simply does nothing.
// So 'Write' can be called for each server.
//[>input(EAX)]a 4 byte input parameter
//[<result(EAX)]a 4 byte return value with implementation specific meaning
//[#DEUTSCH]
// Das Verhalten der 'Write'-Methode ist nicht klar bestimmt.
// 躡licherweise wird sie verwendet, um Daten in einem Kanal
// zu speichern. Das kann einfach durch L鰏chen des 
// 'Schreibgesch黷zt'-Hakerls im Kontext-Men