Autoread_Setmode - Siemens SIMATIC RF1000 Series Operating Instructions Manual

Programming
6.2 Programming via USB interface
Function call
int
vhl_write(
int Handle,
byte VHLFile,
word Address,
word Length,
byte * Data,
int * Status
);
Table 6- 14
Parameter
vhl_write
Return value
6.2.1.13

Autoread_SetMode

This function controls the "Autoread" functionality during runtime. The memory content of the
cards that enter the antenna field of the reader is automatically read in "Autoread" mode
without an explicit read job. The read data is output with the "Autoread_GetMessage"
function.
Note that the "vhl_select" function is executed cyclically in "Autoread" mode. If the
"vhl_select" function is executed as well, this can result in the card not being recognized
when it enters the antenna field of the reader because it was already read in "Autoread"
mode. In addition, the mode is ended with the function call "vhl_select" in "Autoread" mode.
Make sure that the "vhl_select" function is not executed in addition in "Autoread" mode.
28
Description of the parameters
Description
The parameter writes data to a previously specified memory area of the
card.
Handle The session key returned by the function "brp_open_usb_session".
VHLFile Number of the VHL file that is to be used.
Address Start address of the data that is going to be written.
Length Length of the data that is going to be written as of the start address.
Data Area in which the written data is stored (max. 65535 bytes).
Status
OK
•
CARD_NOT_SELECTED_ERR
•
HF_ERR
•
HW_ERR
•
CONFIG_ERR
•
AUTH_ERR
•
READ_ERR
•
You will find more information on the reader status in the section "Status
codes (Page 43)".
BRP_OK
•
You will find more information on return values in the section "Return val-
ues (Page 31)".
Operating Instructions, 02/2019, C79000-G8976-C432-04
SIMATIC RF1000