Read_Epc_Mem - Siemens SIMATIC RF650R Configuration Manual

7.6.2.3

Read_EPC_Mem

The "Read_EPC_Mem" block reads data from the EPC memory of the RF600 transponder.
The length of the EPC memory to be read out is specified by the "LEN_DATA" parameter.
Figure 7-12
Table 7- 10
Parameter
LEN_DATA
LEN_ID
EPCID_UID
IDENT_DATA
SIMATIC RF650R/RF680R/RF685R
Configuration Manual, 10/2015, C79000-G8976-C386-03
"Read_EPC_Mem" block
Explanation of the "Read_EPC_Mem" block
Data type
Word
Byte
Array[1...62] of Byte
Any / Variant
Interface to the SIMATIC controller
7.6 Programming Ident blocks
Description
Length of the EPC memory to be read out (1 ...
62 bytes)
Length of the EPC-ID/UID
Default value: 0x00 ≙ unspecified single tag
access (RF680R, RF685R)
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 buff-
•
er ("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, RF640R)
Data buffer in which the read EPC memory data
is stored.
Note:
For Variant, currently only an "Array_of_Byte"
with a variable length can be created. For Any,
other data types/UDTs can also be created.
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