User Manual

Table Of Contents
IUH-F192-V1-*
Operation
2022-11
43
Meaning of Bits
Owing to the structure of the memory bank for UII/EPC ( see image on page 11), the start
address is located at bit 16. The CRC-16 value occupies the memory position from bit 0
through bit 15; the PC starts at bit 16.
If you activate the filter with the command MF, and then execute command SS10, you receive
only one response from the corresponding tag even if other tags are located in the measure-
ment range:
.34.00.E2.00.90.51.33.02.00.92.18.20.56.15
The value <Negate> controls the mask comparison. 0 = not negated, 1 = negated. If you
negate the filtering by setting the value <Negate> in the command
FI101100001028.34.00.E2.00.90, you receive a response from the tags that does not match
the filter:
.34.00.E2.00.92.01.20.51.70.00.00.00.02.76
.34.00.E2.00.92.01.20.51.70.00.00.00.02.66
If you prefer to filter only at the start of <UII/EPC>, and ignore the <PC>, send the command
FI101000002018.E2.00.90. The start address is 20
hex
, the mask length has 24 bits, and the
mask is .E2.00.90.
The value <LogicalOperation> logically links several filters with each other and is evaluated
only if more than one filter is used. If only one filter is used, this value is ignored. 0 = OR, 1 =
AND
Other examples include:
FI102000000018.E2.00.10 sets filter 0 so that all tags with a TID beginning with .E2.00.10 are
detected.
FI111100002008.22 sets filter 1 so that all tags whose UII/EPC do not begin .22 are detected.
FI1010100010700.00123456789012 sets filter 0 so that the tag with the SpecialFixcode
(PC+UII/EPC) 0.00123456789012 is detected.
The letter x can be used as a wildcard for the channel and filter number. Command
FIxx0000000000 resets the three filters for all IDENTControl channels.
Command FI = Command
<ChanNo> 1 = Channel 1
<FilterNumber> 0 = First filter used, filter number = 0
<MemBank> 1 = Memory bank 01; should be filtered to
UII/EPC
<Negate> 0 = Not negated
<LogicalOperation> 0 = OR link
not relevant here because only one filter is set
0 0 = Value is always 0
<StartAddress> 0010 = Start address 10
hex
or bit 16
<MaskLength> 28 = Mask length, 28
hex
= 40
dec
, i.e., 40 bits
<MaskData> 34.00.E2.00.90 = Actual Mask