Read - Siemens SIMATIC RF600 Series Configuration Manual

9.5.1.3

Read

The "Read" block reads the user data from the transponder from memory bank 3 (USER
area) 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. Specific
access to a certain transponder is made with the "EPCID_UID" and "LEN_ID".
Figure 9-4
Table 9- 3
Parameter
ADDR_TAG
LEN_DATA
LEN_ID
EPCID_UID
IDENT_DATA
SIMATIC RF600
Configuration Manual, 11/2018, C79000-G8976-C386-07
"Read" block
Explanation of the "Read" block
Data type
DINT
INT
SINT
SINT[62]
SINT[10]
Programming via Rockwell controller
9.5 Programming add-on instructions
Default values Description
DW#16#0 Physical address on the transponder
where the read starts.
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 (RF680R, RF685R)
0 Buffer for up to 62 bytes EPC-ID
2 - 62-byte EPC-ID is entered at the
start of the buffer (length is set by
"LEN_ID")
0 Data buffer in which the read data is
stored.
Note.
When necessary a byte/array of any
size can be transferred to this parame-
ter. Note that the array must be ≥ 10
bytes long (e.g. "SINT[12400]").
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