IDriverRequest (ITF) ¶ INTERFACE IDriverRequest EXTENDS __SYSTEM.IQueryInterface
IDriverRequestFactory (ITF) ¶ INTERFACE IDriverRequestFactory EXTENDS __SYSTEM.IQueryInterface Methods: CreateReadRequest CreateWriteRequest ReleaseRequest Structure: CreateReadRequest (Method) CreateWriteRequest (Method) ReleaseRequest (Method)
IDriverCDSV3.CanSendCDSV3CustomRequest (METH) ¶ METHOD CanSendCDSV3CustomRequest : BOOL InOut: Scope Name Type Return CanSendCDSV3CustomRequest BOOL
IDriverCredentialsHandling (ITF) ¶ INTERFACE IDriverCredentialsHandling EXTENDS __SYSTEm.IQueryInterface Implementations of this interface handle credentials that might be necessary for logging in to a specific device. Properties: CredentialsNecessary Methods: SetCredentials Structure: CredentialsNecessary (Property) SetCredentials (Method)
IDriverCredentialsHandling.CredentialsNecessary (PROP) ¶ PROPERTY CredentialsNecessary : BOOL
IDriverRequestFactory.ReleaseRequest (METH) ¶ METHOD ReleaseRequest Releases the given request object. Note This method might be called while a request is still active in case the list of items is changed while a request is on it’s way. InOut: Scope Name Type Comment Input request IDriverRequest The request that should be released. The object will no longer be accessed after this call.
IDriverRequestFactoryCustom (ITF) ¶ INTERFACE IDriverRequestFactoryCustom EXTENDS IDriverRequestFactory Methods: CreateCustomRequest CreateReadRequest , inherited from IDriverRequestFactory CreateWriteRequest , inherited from IDriverRequestFactory ReleaseRequest , inherited from IDriverRequestFactory Structure: CreateCustomRequest (Method)
IDriverRequestFactoryCustom.CreateCustomRequest (METH) ¶ METHOD CreateCustomRequest : IDriverCustomRequest InOut: Scope Name Type Return CreateCustomRequest IDriverCustomRequest Input request ICustomRequest
IDriverRequestFactoryLargeRequests (ITF) ¶ INTERFACE IDriverRequestFactoryLargeRequests EXTENDS IDriverRequestFactory This interface can additionally be implemented by function blocks implementing IDriverRequestFactory to support reading/writing of possibly large requests that might require multiple requests. Note This feature is typically necessary for successfully reading/writing recipes Methods: CreateLargeReadRequest CreateLargeWriteRequest CreateReadRequest , inherited from IDriverRequestFactory CreateWriteRequest , inherited from IDriverRequestFactory ReleaseRequest , inherited from IDriverRequestFactory Structure: CreateLargeReadRequest (Method) CreateLargeWriteRequest (Method)
IDriverRequestFactory.CreateReadRequest (METH) ¶ METHOD CreateReadRequest : IDriverRequest Creates a request representing the read operation for the given list of items. The request may stay alive until the list of items changes. That means it might be issued in several calls to IDriverStateMachine.SendRequest When the request is no longer necessary, it will be released by a call to IDriverRequestFactory.ReleaseRequest Important The items may be stored as part of the request object. Nevertheless it is not allowed to access them from other threads because the list might change within the main datasources task. The list will not change as long as this object is alive. InOut: Scope Name Type Comment Return CreateReadRequest IDriverRequest A new request object representing the read operation for the given list of items. Input pItems POINTER TO IDataItem A pointer to an array of IDataItem instances that should be monitored. itemsCount DINT The number of items within the array.
