Read_Epc_Mem - Siemens Simatic Ident Function Manual

3.4.2.3

Read_EPC_Mem

The "Read_EPC_Mem" block reads data starting at address 4 from the EPC memory of the
RF600 transponder. Access is to bank 1 as of the start address 4. The length of the EPC
memory to be read out is specified by the "LEN_DATA" parameter.
Figure 3-14
Table 3- 18
Parameter
LEN_DATA
LEN_ID
EPCID_UID
IDENT_DATA
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04
"Read_EPC_Mem" block
Explanation of the "Read_EPC_Mem" block
Data type
Word
Byte
Array[1...62] of
Byte
Any / Variant
Default values Description
W#16#0 Length of the EPC memory to be read
out (1 ... 62 bytes)
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)
0 Data buffer in which the read EPC
memory data is stored.
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.
Setting parameters for blocks
3.4 Programming Ident blocks
41