Read_Tid - Siemens Simatic Ident Function Manual

Setting parameters for blocks
3.4 Programming Ident blocks
3.4.2.4

Read_TID

The "Read_TID" block reads data from the TID memory area (Tag Identification Memory
Bank) of the RF600 transponder. The length of the TID to be read is specified by the
"LEN_DATA" parameter. The length of the TID varies depending on the transponder and can
be found in the transponder data sheet.
Figure 3-15
Table 3- 19
Parameter
LEN_ID
EPCID_UID
LEN_DATA
IDENT_DATA
42
"Read_TID" block
Explanation of the "Read_TID" block
Data type
Byte
Array[1...62] of
Byte
Word
Any / Variant
Default values Description
B#16#0 Length of the EPC-ID/UID
Default value: 0x00 ≙ unspecified
single tag access (RF61xR, RF68xR)
0 Buffer for up to 62 bytes EPC-ID, 8
bytes UID or 4 bytes handle ID.
2 - 62-byte EPC-ID is entered at
•
the start of the buffer (length is set
by "LEN_ID")
8-byte UID is entered at the start
•
of the buffer ("LEN_ID = 8")
4-byte handle ID must be entered
•
in the array element [5]-[8]
("LEN_ID = 8")
Default value: 0x00 ≙ unspecified
single tag access (RF620R, RF630R)
W#16#4 Length of the EPC memory to be read
out (1 ... 62 bytes)
0 Read TID
Note:
For Variant, currently only an "Ar-
ray_of_Byte" with a variable length
can be created. For Any, other data
types/UDTs can also be created.
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04