Beckhoff Knowledge Base: Communication with an ekey finger scanner

ST_EKEY_CommandBuffer

TYPE ST_EKEY_CommandBuffer :
STRUCT
    stSend              : ARRAY[0..EKEY_MAX_SEND_BUFFER_SIZE] OF ST_EKEY_SendData;
    stReceive           : ARRAY[0..EKEY_MAX_NR_OF_READER] OF ST_EKEY_RecData;
    bSendBufferBlocked  : BOOL;
    uiIndex             : UINT;
END_STRUCT
END_TYPE