Configuration manual Reader
11
Modifications, misprints and errors excepted.
English
2.
Description of the configuration parameters
2.3.6.
“EnableRSSIThresholdAtSpecificCmds”
Characteristics:
available from firmware:
v1.46.00
Data type:
Bool (8-bit)
Unit:
–
Value range:
0; 255
Description:
The RSSI threshold value set by the “RSSIThreshold1...8” parameter applies equally to non-specific (“...GetEPCs”,
“...Any”) and specific (“...Specific”) tag reader commands. The effect on specific tag reader commands can however
be switched on and off by these configuration parameters. The following scenario can be set: “SyncGetEPCs”
commands the reader to scan cyclically for tags in the antenna field. The configuration parameter “RSSIThreshold1...8”
means that tags with less than a specified RSSI value are not reported. One tag is now close to the RSSI
threshold and when the threshold is reached is reported by the reader to the higher level. This triggers a specific
command for the reported tag. If “EnableRSSIThresholdAtSpecificCmds” is activated it can now happen that the
specific command comes to nothing, since the RSSI value of the tag is fluctuating around the threshold value.
In such a scenario, “EnableRSSIThresholdAtSpecificCmds” should be deactivated.
2.3.7.
“FlashWriteAdditionalPower”
Characteristics:
available from firmware:
v2.00.00
Data type:
Byte (8-bit)
Unit:
¼ dB
Value range:
0-48
Description:
It takes more energy to write to a tag than to read a tag. Therefore for a given transmission power the tag must
be nearer the antenna for writing than for reading. In order to overcome this distance differential, this parameter
can be used to specify whether and by how much the reader transmission power needs to be increased
for write commands compared to read commands.
2.4.
The configuration group “Tag communication” (“TagComm”)
2.4.1.
“UsePilottone”
Characteristics:
available from firmware:
v1.30.00
Data type:
Bool (8-bit)
Unit:
–
Value range:
0; 255
Description:
This parameter allows the pilot tone tag to be switched on and off. Tags to EPCGlobal Class 1 Gen 2 are able to
carry a pilot tone ahead of the user data. The purpose of the pilot tone is the synchronisation of the reader to the
response of the tag. Without a pilot tone it is more difficult for the reader to synchronise itself to the tag response.
In order to ensure reliable tag detection, this parameter should always be activated.
