Specifications
XBee®/XBee‐PRO®SERFModules
©2009DigiInternational,Inc. 93
AT Command Response
Frame Type: 0x88
In response to an AT Command message, the module will send an AT Command Response
message. Some commands will send back multiple frames.
Example: Suppose the BD parameter is changed on the local device with a frame ID of 0x01. If
successful (parameter was valid), the above response would be received.
Modem Status
Frame Type: (0x8A)
RF module status messages are sent from the module in response to specific conditions.
Example: The following API frame is returned when an API coordinator forms a network.
Note: New modem status codes may be added in future firmware releases.
Frame Fields Offset Example Description
A
P
I
P
a
c
k
e
t
Start Delimiter 00x7E
Length MSB 1 0x00
Number of bytes between the length and the checksum
Frame-specific Data
LSB 2 0x05
Frame Type 30x88
Frame ID 40x01
Identifies the UART data frame being reported. Note:If
Frame ID = 0 in the AT Command frame, then no AT
Command Response frame will be sent.
AT Command
5 ‘B’ = 0x42
Command Name - Two ASCII characters that identify the
AT Command.
6 ‘D’ = 0x44
Command Status 70x00
0 = OK
1 = ERROR
2 = Invalid Command
3 = Invalid Parameter
Command Data
Register data in binary format. If the register was set,
then this field is not returned, as in this example.
Checksum 8 0xF0 0xFF - the 8 bit sum of bytes from offset 3 to this byte.
Frame Fields Offset Example Description
A
P
I
P
a
c
k
e
t
Start Delimiter 00x7E
Length
MSB 1 0x00
Number of bytes between the length and the checksum
LSB 2 0x02
Frame-specific Data
Frame Type 30x8A
Status 40x06
0 = Hardware reset
1 = Watchdog timer reset
2 =Joined network (routers and end devices)
3 =Disassociated
6 =Coordinator started
7 = Network security key was updated
0x10 = Key establishment complete
0x80 = stack error
Checksum 5 0x6F 0xFF - the 8 bit sum of bytes from offset 3 to this byte.