Siemens SIMATIC Ident Function Manual page 32

Configuring the instructions
4.5 Programming add-on instructions
Parameter
NUMBER_TAGS
LEN_DATA
Result for RF68xR
The number of "TAG_DATA[x]" elements of the data types of the ATTRIBUTE "0x80" and
"0x81" depends on the number of transponders to be expected. For this reason, you need to
assemble the receive buffer yourself. Not the following structure when creating the receive
buffer "IDENT_DATA"/data type:
● The first element "NUM_MDS" is always of the type "WORD".
● The next element "TAG_DATA" is always of the type "ARRAY". The number of
transponders to be expected ("n") must be entered in the "ARRAY".
The following tables show an example of the structure of the receive buffer
"IDENT_DATA"/data type for the ATTRIBUTE "0x80" and "0x81".
Table 4- 12 ATTRIBUTE "0x80"
Name
NUM MDS
TAG DATA
TAG_DATA[1]
Reserved
ID_Len
EPC_ID
tagPC
TAG_DATA[2]
...
TAG_DATA[n]
32
Data type
INT
INT
Type Comment
INT Number of MDS
IID IN I 80[n] Length of EPC ID
IID_IN_I_80
SINT
SINT Length of EPC ID
SINT[62] EPC-ID
INT
IID_IN_I_80
...
IID_IN_I_80
Default values Description
0 Number of transponders in the anten-
na field
0x00 Length of the valid data
During command processing = 0
Ident profile, Add-on instruction for Rockwell systems
Function Manual, 01/2019, C79000-G8976-C410-03