Inventory - Siemens Simatic Ident Function Manual

Figure 3-11
Table 3- 10
Parameter
DATA
3.4.2.2

Inventory

The "Inventory" block activates the taking of inventories. With a single inventory, acquisition
cycles of all antennas with all polarizations are queried. For example, if 2 antennas are
connected to a reader and each has 3 polarizations, then an inventory will include 6
acquisition cycles.
With the RF620R and RF630R readers, inventories are always taken as soon as the
antenna is turned on.
Special feature of the RF61xR/RF68xR readers
Note that the length of the data buffer ("IDENT_DATA") must correspond to at least the
length of the maximum expected data. If more transponders are identified and data read out
than have space in the assigned buffer length of "IDENT_DATA", the data of these
transponders is lost. This reaction is indicated by the error "0xE7FE0400" (buffer overflow).
For the RF61xR/RF68xR readers, the parameters "DURATION" and "DUR_UNIT" are also
available. Using the parameters, you can specify the duration of the inventories.
Ident profile and Ident blocks, standard function for Ident systems
Function Manual, 10/2018, C79000-G8976-C387-04
"Config_Download" block
Explanation of the "Config_Download" block
Data type
Any / Variant
Setting parameters for blocks
3.4 Programming Ident blocks
Description
Data buffer for configuration data.
The real length of the data depends on the com-
plexity of the configuration and the firmware
version of the reader. With a standard configura-
tion of the RF18xC and RF61xR/RF68xR devic-
es, we recommend a memory size of 4 KB. If
you use advanced reader configurations (filter-
ing) or want to change the configuration in the
future without needing to adapt the memory size
of "DATA", we recommend a memory size of 8-
16 KB.
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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