Table of Contents

IParameterChannel

Namespace
ZCore
Extends
Inherited Properties
Inherited Methods
INTERFACE IParameterChannel EXTENDS ZCore.IObject, ZCore.IError, ZCore.IUnmanagedObject

This interfaces holds the general methods that the Zeugwerk Framework expects from an object that may read and write service data objects of the fieldbus. Implementations may be provided in a platform library, i.e. (The beckhoff platform-library).

By extending from the IObject this interface may be used in Await methods of sequences.

Methods

RequestAsync 

METHOD RequestAsync (
 [input] taskToken : ITaskToken,
 [input] actionFlags : ParameterChannelActionFlag,
 [input] parameter1 : DWORD,
 [input] parameter2 : DWORD,
 [input] parameterType : INT,
 [input] bufferPtr : ZPointer,
 [input] bufferSize : UDINT)

Requests a parameter from the fieldbus. The actual meaning of the parameters is implementation dependent. Current implementations are:

Inputs

taskToken ITaskToken
actionFlags ParameterChannelActionFlag
parameter1 DWORD
parameter2 DWORD
parameterType INT
bufferPtr ZPointer
bufferSize UDINT

SetTimeout 

METHOD SetTimeout (
 [input] timeout : LREAL)

Controls the general timeout behavior of this object. If a command (i.e. request) takes longer than timeout the object transitions into its error state.

Inputs

timeout LREAL

in seconds