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Description of the DP Functions, Data, and Error Codes

DP Base Programming Interface for CP 5613/CP 5614

C79000-G8976-C108-01

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Parameters

Name Description

user_handle User handle assigned with the DP_open call.

sema_type Type of semaphore:

DP_OBJECT_TYPE_INPUT_CHANGE -

Hardware event when slave input data changes.

DP_OBJECT_TYPE_DIAG_CHANGE -

Hardware event when diagnostic data changes.

DP_OBJECT_TYPE_CYCLE_INT -

Hardware event at the start of a new DP cycle

(reserved for later expansions)

DP_OBJECT_TYPE_ASYNC -

Software event on completion of an asynchronous call,

can be fetched with DP_get_result.

DP_OBJECT_TYPE_FAST_LOGIC -

Hardware event for fast logic.

Apart from DP_OBJECT_TYPE_ASYNC, the semaphores

can be initialized only once per CP.

sema_handle Address of a variable for the semaphore object. The

returned semaphore object must be used with the Win32

API functions.

error

Address of a structure provided by the user program of the

type DP_ERROR_T - If an error occurred, the structure

contains details for troubleshooting (see Section 4.4).

Return Value

Name Description

DP_OK The semaphore could be initialized.

other Unsuccessful completion of the function

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