Table of Contents
Advertisement
www.agelectronica.com
XBee Series 2 ZigBee OEM RF Modules v1.x2x [2007.07.019]
3 Data entries +
1 invalid entry
www.agelectronica.com
by setting the BI command to a valid index in AT firmware, or by using the Binding Table API
Command frame in the API firmware. The binding table entries are organized as follows.
Table 4‐04.
Binding Table Index
Name
0
Coordinator Binding
1
Tx-Aggregation Binding
2
Tx-Explicit Binding
3-4
Reserved
5-6
Command Binding
7-10
Received Data Bindings
11-12
User Bindings.
Coordinator Binding
The coordinator binding contains the 64-bit address of the coordinator. This table entry is
populated when the device joins the network.
Tx-Aggregation Binding
This binding table entry contains the 64-bit address of the aggregate (sink) node if one exists.
Data can be sent to the aggregate node by addressing this index in the binding table.
Tx-Explicit Binding
The Tx-Explicit binding table entry contains the destination address and endpoint information from
the last explicit transmission that was issued. This entry is modified whenever explicit addressing
is used in either the AT or API firmware as described in the "XBee Series 2 Addressing" section.
Command Binding
If a remote command request is received, the command binding entry stores information from the
device that initiated the command. For example, if the ND or DN command is issued, this binding
table entry would contain the source address of the device that sent the ND command.
Received Data Bindings
The received data bindings contain addressing information for the last three received data
packets. The fourth entry is marked invalid. When a data packet is received, the address and
endpoint information is stored into the invalid entry. Then, the oldest entry is made invalid. Thus,
once an entry is created in the Received Data binding indexes, it will remain valid until three more
RF data packets are received.
Figure 4‐09. Demonstration of how entries in the received data bindings are replaced when an RF data
packet is received.
3rd
2nd
1st
INV
DATA
Data is inserted into
Invalid entry
© 2007 Digi International, Inc.
rd
Oldest entry (3
) is
marked Invalid
3rd
INV
2nd
2nd
1st
1st
DATA
www.agelectronica.com
Chapter 4 ‐ RF Module Configuration
Access
Read-Only
Read-Only
Read-Write
Read-Only
Read-Only
Read-Only
Read-Write
INV
nd
2
newest entry becomes
oldest data entry
3rd
st
1
entry becomes second
2nd
newest entry
1st
Newest or 1st
www.agelectronica.com
30
Advertisement
Table of Contents
