Siemens SIMATIC RF1070R, Operating Instructions Manual

Page: 30 / 58

Programming
6.2 Programming via USB interface
SIMATIC RF1000
30
Operating Instructions, 02/2019, C79000-G8976-C432-04
6.2.1.14 Autoread_GetMessage
This function reads data from a transponder located in the antenna field of the SIMATIC
RF1070R. Up to 16 bytes of data can be read autonomously with this function.
Function call
int
brp_exec_comand(
int Handle,
byte devcode,
byte cmdcode,
byte * param,
byte param_len,
init timeout,
init * Status,
byte * resp,
int * resp_len,
init max_resp_len
);
Table 6- 16 Description of the parameters
Parameter Description
brp_exec_comand The parameter reads data from a transponder located in the antenna field
of the SIMATIC RF1070R.
Handle The session key returned by the function "brp_open_usb_session".
devcode 0x05
cmdcode 0x01
param --
param_len 0x00
timeout Time in [ms] until the action is aborted (100 is the recommended value).
Status
•
OK
•
ERR_NOMESSAGE
•
ERR_AR_DISABLED
You will find more information on the reader status in the section "Status
codes (Page 43)".
resp Buffer for the received data
•
Byte 0: Message type (0x00 for card identification)
• Byte 1: Message length in bytes
•
Byte 2: ... message 1: Message data
resp_len Current length of the response data in bytes
max_resp_len Maximum length of the response data
Return value
•
BRP_OK
You will find more information on return values in the section "Return val-
ues (Page 31)".