Siemens SIMATIC Ident - Programming Ident Blocks; Basic Blocks; Read

Setting parameters for blocks
3.4 Programming Ident blocks
Ident profile and Ident blocks, standard function for Ident systems
24 Function Manual, 10/2018, C79000-G8976-C387-04
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 "Read" block
Table 3- 4 Explanation of the "Read" block
Parameter
Data type
Default values
Description
ADDR_TAG DWord 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".
1)
LEN_DATA
Word
W#16#0
Length of the data to be read
LEN_ID Byte B#16#0 Length of the EPC-ID/UID
Default value: 0x00 ≙ unspecified
single tag access (RF200, RF300,
RF61xR, RF68xR)