Programming Ident Blocks; Basic Blocks; Read - Siemens Simatic Ident Function Manual

Setting parameters for blocks

3.4 Programming Ident blocks

3.4 Programming Ident blocks
3.4.1

Basic blocks

3.4.1.1

Read

The "Read" block reads the user data from the transponder and enters this in the
"IDENT_DATA" buffer. The physical address and the length of the data are transferred using
the "ADDR_TAG" and "LEN_DATA" parameters. With the RF61xR/RF68xR readers, the
block reads the data from memory bank 3 (USER area). Specific access to a certain
transponder takes place with the optional "EPCID_UID" and "LEN_ID" parameters.
Figure 3-5
Table 3- 4
Parameter
ADDR_TAG
LEN_DATA
LEN_ID
24
"Read" block
Explanation of the "Read" block
Data type
DWord
Word
Byte
Default values Description
DW#16#0 Physical address on the transponder
where the read starts. You will find
more information on addressing in the
section "Transponder addressing
(Page 113)".
With MV: The length of the read code
is located starting at address "0" (2
bytes). The read code is located start-
ing at address "2".
W#16#0 Length of the data to be read
B#16#0 Length of the EPC-ID/UID
Default value: 0x00 ≙ unspecified
single tag access (RF200, RF300,
RF61xR, RF68xR)
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04
1)