Autoread_Getmessage (Called Via "Exec_Command") - Siemens SIMATIC RF1000 Operating Instructions Manual

Programming
7.2 Programming via USB/RS232 interface (using DLL functions)
Table 7-17
Parameter
brp_exec_command
Return value
7.2.1.16

Autoread_GetMessage (called via "exec_command")

This function reads data from a transponder located in the antenna field. Up to 16 bytes of data
can be read autonomously with this function.
Function call
int
brp_exec_command(
int Handle,
byte devcode,
byte cmdcode,
byte * param,
byte param_len,
init timeout,
init * Status,
byte * resp,
int * resp_len,
init max_resp_len
);
50
Description of the parameters
Description
The parameter activates/deactivates the "Autoread" function.
Handle The session key returned by the "brp_open_usb_session" or "brp_open_seri‐
al_session" function.
devcode 0x05
cmdcode 0x00
param Buffer for the function parameters:
• 0x00: The "Autoread" functionality is deactivated and VHL functions can be
used.
• 0x01: The "Autoread" functionality is permanently switched on. There is a
permanent check as to whether a card is located in the antenna field.
• 0x02: The "Autoread" functionality is executed once as soon as a card
enters the antenna field. This is followed by a switch to VHL mode. The card
identification is executed one more time with another call using the pa‐
rameter value 0x02.
param_len 0x01
timeout Time in [ms] until the action is aborted (500 is the recommended value).
Status OK
You will find more information on the reader status in the section "Status codes
(Page 66)".
resp Buffer for the received data
resp_len Current length of the response data in bytes
max_resp_len Maximum length of the response data
• BRP_OK
You will find more information on return values in the section "Return values
(Page 52)".
Operating Instructions, 05/2023, C79000-G8976-C432-10
SIMATIC RF1000