Siemens SIMATIC RF220R - Functionality of Read and Write Function Blocks

3 Mode of Operation
Read/write data with IO-Link
Entry ID: 73565887, V3.4, 06/2022
17
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"DataBuffer"
In data block "DataBuffer" (DB1), the RFID data to be read from or written to the
transponder is stored.
Table 3-4
Name
Data type
Description
readData
Array[0..1999] of byte
Data read from the transponder after a read job.
writeData
Array[0..1999] of byte
Data, to be written to a transponder during a
write process.
3.2 Functionality
3.2.1 Program details on FB "IolReadAnt" (FB3)
The following figures and tables show the call interface of user block FB
"IolReadAnt" (FB3).
Figure 3-3
OutputInput
The block has the following inputs:
Table 3-5
Name
Data type
Description
read
Bool
Enables the read function after a positive edge
addrTag
Word
Start address of the data to be read from the
transponder.
length
DWord
Length of the data that is read from the transponder.
hwId
HW_ANY
Hardware identifier of the IO-Link communication
module.
portAddr
INT
Start address of the connected reader (PCT Tool).