Relevant Methods (Data Area Registration)

General

In the following, all relevant methods for the registration of the data areas of the PROFIBUS_DPV1_Slave interface are listed:

Method	Description
IsRegisteredDataModule	It is checked whether the transferred data module is registered. Return value 0: No data module is registered on a certain slot and index. Return value 1: A data module is registered on a certain slot and index. Return value 2: The slot is invalid. Return value 3: The index is invalid.
RegisterAsyncDataModule	The transferred data module is registered. Registers a data module with a slot and an index Return value 0: The data module is registered. Return value 1: The slot is invalid. Return value 2: The index is invalid. Return value 3: The pointer to the data area is 0. Return value 4: The length is invalid. Return value 5: The data module already exists.
UnregisterAllAsyncDataModules	All registered data modules are unregistered.
UnregisterAsyncDataModule	The transferred data module is unregistered. Return value 0: The data module has been unregistered. Return value 1: The slot is invalid. Return value 2: The index is invalid. Return value 3: The pointer to the data area is 0. Return value 4: The data module is not registered.
GetAsyncDataModule	The data of a defined registered data module is read and returned. Return value 0: The data module has been read out successfully. Return value 1: The slot is invalid. Return value 2: The index is invalid. Return value 3: No data module is registered with this slot and index.

Method	Interface declaration
IsRegisteredDataModule	`METHOD IsRegisteredDataModule : UDINT VAR_INPUT i_bySlot : BYTE; i_byIndex : BYTE; END_VAR`
RegisterAsyncDataModule	`METHOD RegisterAsyncDataModule : UDINT VAR_INPUT i_rstAsyncDataModule : ST_PROFIBUSDPV1AsyncDataModule; END_VAR`
UnregisterAllAsyncDataModules	`METHOD UnregisterAllAsyncDataModules : UDINT`
UnregisterAsyncDataModule	`METHOD UnregisterAsyncDataModule : UDINT VAR_INPUT i_rstAsyncDataModule : ST_PROFIBUSDPV1AsyncDataModule; END_VAR`
GetAsyncDataModule	`METHOD GetAsyncDataModule : UDINT VAR_INPUT i_rstAsyncDataModule : ST_PROFIBUSDPV1AsyncDataModule; END_VAR`