Pepperl+Fuchs IUH-F190-V1 Series Manual page 42

IUH-F190-V1-*
Operation
When using this command, make sure that the protocol control word contains the correct
length of the following UII/EPC. If this is not executed correctly, the complete data is not output
on the subsequent read operation because the command SS uses the length in the protocol
control word for the output.
In accordance with EPC Gen 2 (ISO/IEC 18000-63), the protocol control word consists of two
bytes. The five highest value bits denote the length of the <UII/EPC> in words (= 16 bit):
00000
bin
00001
bin
00010
bin
...
11111
bin
The meaning of the remaining bits is described in EPC Gen 2 (ISO/IEC 18000-63). If a UII/EPC
has the length 12 bytes, i.e., 6 words (00110
control word corresponds to 00110000 00000000
not equal to 0, this produces a different protocol control word.
Note!
Several Tags in the Measurement Range
If there is more than one tag in the measurement range when this command is run, the UII is
written to the first tag only. Status A is output for all other tags.
Single Read Words SR
One attempt is made to read <WordNum> 32-bit words from address <WordAddr>.
Command: SR <ChanNo> <WordAddr> <WordNum> <CHCK> <ETX>
Response: <Status><ChanNo><Luii><UII><Ldata><Data><CHCK> <ETX>
Example:
SR1000101 reads a 4-byte word from memory address "0001."
Note!
The memory bank (MB) parameter defines the bank accessed by this command. see
"Memory Module for Tag Accesses to the "Memory Bank" MB" on page 52.
Enhanced Read Words ER
Continuous attempts are made to read <WordNum> 32-bit words from the address
<WordAddr>. Only changing data is transferred via the interface. When a read/write tag leaves
the read range, status 5 is output.
Command: ER <ChanNo> <WordAddr> <WordNum> <CHCK> <ETX>
Response: <Status><ChanNo><Luii><UII><Ldata><Data><CHCK> <ETX>
42
No word
One word
Two words
...
31 words
F <ChanNo> 0001<CHCK> <ETX>
0 bits
16 bits
32 bits
...
496 bits
), and all other bits are equal to 0, the protocol
bin
or 3000 . If some of the other bits are
bin hex