`SERVICEHANDLER_PARAMETER` (STRUCT)

TYPE SERVICEHANDLER_PARAMETER : STRUCT

InOut:

Name	Type	Comment
`ulChannelId`	`UDINT`	Id of the channel on which the request arrived
`pHeaderTag`	POINTER TO HEADER_TAG	Pointer to the header struct of the received request
`pduData`	PROTOCOL_DATA_UNIT	References the request data (without header)
`pduSendBuffer`	PROTOCOL_DATA_UNIT	Contains the buffer (pointer and length) for the reply data
`Result`	`RTS_IEC_RESULT`	Result code; is used as inout parameter. When the corresponding event is posted, then this value is already pre-initalized with error code: - ERR_PENDING: Event was already posted before for the same received service request. The previous call returned ERR_CALL_AGAIN. - All other values (most likely ERR_L7_UNKNOWNCMD): Event for the received service request is posted the first time. Typical result codes, which should be returned by the event handler: - ERR_OK: Received service was completely handled. - ERR_CALL_AGAIN: Received service will be handled asynchronously. Event should be signaled again to poll the service reply. - ERR_L7_UNKNOWNCMD: Service is unknown by the event handler. - All other error codes: Runtime will send this result in a generic error tag as reply (or close the channel).

SERVICEHANDLER_PARAMETER (STRUCT)