IDENTEC SOLUTIONS i-B350L-CC, Руководство пользователя по оборудованию

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i-B350L -CC
– Hardware User Manual | 20. September 2019
Copyright © 2019 IDENTEC SOLUTIONS. All rights reserved.
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Broadcast Message Options: The options in this field depend on the capabilities of the tag.
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User Data Length: Configure the number of Bytes from the “User Data” that is sent with a broadcast
message. The number starts from Byte 0 (zero). Please pay attention to the limits of the User Data Length
described at the end of this chapter.
3.3 Bursts when passing a Position marker
Note: This setting can be found in the ILR Tag Configuration software tool in the edit block “Marker”
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Number of Bursts (New Loop): 0 = no bursts, max. 15 bursts
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Time between Bursts (Marker): This sets a timeslot inside which the tag sends out as single burst. This
gives a random delay between every single burst message to avoid collisions with tags that are triggered
by the same source to burst. Possible settings are 40, 100, 200, 300, 400, 500, 600, and 700 ms. Please
read the details in the following subchapter “Information on Burst Settings”.
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Marker Message Options: Entering a marker field triggers a burst. This parameter determines the contents
of the burst messages.
3.4 Limitations of the User Data Field
The total length of the broadcast message (burst or ping) is limited to 50 Bytes. So depending on the broadcast
message options, these are the allowed number of bytes for the user data:
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User Data only => max. 50 Bytes of user data
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Marker | User Data => max. 38 Bytes of user data
3.5 Information of Burst Settling
The parameter “Time between Bursts (Marker)” is not simply a delay time. It is in fact a timeslot. In this
timeslot the tag chooses a random moment to do a single burst. This avoids that bursts collide with other tags,
that are simultaneously triggered by the same marker loop. These timeslots are repeated until all bursts are
sent.
With very few tags the factory setting of 40 ms is sufficient. In case there is the possibility that dozens of tags
are triggered to burst at once, this value can be increased. This brings the tradeoff of a longer overall time until
all bursts are sent. E.g. with a slot width (Time between Bursts) of 700 ms and 8 bursts, the amount of time for
all bursts is 5.6 seconds.
Example
This example shows 3 tags (A, B, C) that are simultaneously triggered by a marker loop (LF marker) and are
configured to burst 3 times. The timeslot (Time between Bursts) is set to the default of 40 ms.