Write - Siemens SIMATIC RF120C Operating Instructions Manual

4.4.3

Write

The "Write" block writes the data from the "IDENT_DATA" buffer to the transponder once.
The physical address and the length of the data are transferred using the "ADR_TAG" and
"LEN_DATA" parameters. Up to 1024 bytes can written with one job.
Figure 4-11
Table 4- 16
Parameter
ADR_TAG
LEN_DATA
UID
IDENT_DATA
Communications module RF120C with application blocks for S7-1200 and S7-1500
Operating Instructions, 07/2013, C79000-G8976-C328-01
"Write" function block
Explanation of the "Write" function block
Data type
WORD
INT
Array [1...8] of Byte
Array [1...1024] of
Byte
Parameter assignment and configuration
Description
Physical address on the transponder where the
write starts. You will find more detailed
information on addressing in the section
"Transponder addressing (Page 40)".
Length of the data to be written (1 ... 1024 bytes)
Unique Identifier of the transponder
In single tag mode, this parameter is not used
(UID = 0). In multi-tag mode you obtain the UID
of the transponder using the Inventory command
("AdvancedCmd" function block).
Data buffer with the data to be written.
4.4 Ident instructions
37