Pepperl+Fuchs IDENTControl IQH3-FP-V1 Manual page 30

IQH3-FP-V1
Operation
Example
WP1QQV.00.01.4D specifies the multi-frame protocol.
RP1QQV.00.00 reads out the specified protocol.
Response to a single read command in multi-frame protocol mode:
0<ChanNo><Luid><UID><Ldata><data><CHCK><ETX>
0<ChanNo><Luid><UID><Ldata><data><CHCK><ETX>
F<ChanNo>0002<CHCK><ETX>
The read command was executed, two tags responded.
For each tag, the status, the IDENTControl channel, the length of the UID, the UID, the length of
the data, and the read data are output. Finally, the status F, the IDENTControl channel, and the
number of tag responses are output.
<Luid>
<Ldata>
Q Value QW
The QW parameter defines the number of tags expected in the sensing range. This setting
affects the time slot when communicating with a tag to avoid collisions due to simultaneous
communication between multiple tags.
ParamTyp:
Default:
Value range:
Note
The execution time for read/write tag access is reduced by reducing the Q value. The Q value
influences the execution time of write/read commands.
Example
WP1QQW.00.01.01 sets the Q value to 1. The read/write device therefore operates with 2
time frames for 2 expected tags.
RP1QQW.00.00 outputs the set Q value.
Reset to Default RD
This parameter returns all read/write device settings to the factory setting.
ParamTyp:
Example
WP1QRD.00.00
Factory setting: see table "Parameter" on page 27.
32
Length of <UII> in bytes, 2 bytes
Length of <data> in bytes, 2 bytes
QW
QW = 0
0 = one tag
1 = two tags
2 = several tags
3 = many tags
4 = a great many tags
RD
1
= 2