Building Block Structure - Siemens Simatic Ident Function Manual
Rfid systems ident profile and ident blocks, standard function for ident systems
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Also See for Simatic Ident:
- System manual (362 pages) ,
- Function manual (122 pages) ,
- Operating manual (80 pages)
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Description
2.2 Building block structure
2.2
Building block structure
The program blocks act as the communication interface between an Ident device (e.g. ASM
456) and the user program. The blocks support the following functions:
● Configuration
● Editing commands
● Reading and writing of data
● Diagnostics
The Ident profile is a single complex block containing all the commands and functions for
RFID systems and optical reader systems. The Ident blocks represent a simplified interface
of the Ident profile. Each Ident block contains a single command of the Ident profile.
The size of the "IDENT_DATA" data buffer (with the Ident blocks), "TXREF" and "RXREF"
(with the Ident profile) can be variable. The parameters are defined for S7-300 / S7-400 as
"Any" pointers and for S7-1200 / S7-1500 as "Variant".
Table 2- 3
S7-300/-400 ("Any" pointer)
"IDENT_DATA", "TXREF", "RXREF": Arrays of
every type with a different length, supplied status
UDTs and self-defined UDTs can be created.
10
Difference
S7-1200/-1500 ("Variant")
"IDENT_DATA", "TXREF", "RXREF": Only arrays
of the data type Byte can be created. The length
is variable.
Exception: With the Ident blocks "Reader-Status"
and "Tag-Status", the supplied status data types
can also be created for "IDENT_DATA".
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04
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