Digi XBee User Manual download pdf (Page 8)

XBee®/XBee‐PRO®ZBRFModules

©2010DigiInternational,Inc. 135

Diagnostics

1.Nodetypesthatsupportthecommand:C=Coordinator,R=Router,E=EndDevice

AT Command Options

1.Nodetypesthatsupportthecommand:C=Coordinator,R=Router,E=EndDevice

DiagnosticsCommands

AT

Command

Name and Description

Node

Type

Parameter Range Default

Firmware Version. Read firmware version of the module.

The firmware version returns 4 hexadecimal values (2 bytes) "ABCD". Digits ABC are

the main release number and D is the revision number from the main release. "B" is a

variant designator.

XBee and XBee-PRO ZB modules return:

0x2xxx versions.

XBee and XBee-PRO ZNet modules return:

0x1xxx versions. ZNet firmware is not compatible with ZB firmware.

CRE 0 - 0xFFFF [read-only] Factory-set

Hardware Version. Read the hardware version of the module.version of the module.

This command can be used to distinguish among different hardware platforms. The

upper byte returns a value that is unique to each module type. The lower byte indicates

the hardware revision.

XBee ZB and XBee ZNet modules return the following (hexadecimal) values:

0x19xx - XBee module

0x1Axx - XBee-PRO module

CRE 0 - 0xFFFF [read-only] Factory-set

Association Indication. Read information regarding last node join request:

0x00 - Successfully formed or joined a network. (Coordinators form a network, routers

and end devices join a network.)

0x21 - Scan found no PANs

0x22 - Scan found no valid PANs based on current SC and ID settings

0x23 - Valid Coordinator or Routers found, but they are not allowing joining (NJ expired)

0x24 - No joinable beacons were found

0x25 - Unexpected state, node should not be attempting to join at this time

0x27 - Node Joining attempt failed (typically due to incompatible security settings)

0x2A - Coordinator Start attempt failed‘

0x2B - Checking for an existing coordinator

0x2C - Attempt to leave the network failed

0xAB - Attempted to join a device that did not respond.

0xAC - Secure join error - network security key received unsecured

0xAD - Secure join error - network security key not received

0xAF - Secure join error - joining device does not have the right preconfigured link key

0xFF - Scanning for a ZigBee network (routers and end devices)

Note: New non-zero AI values may be added in later firmware versions. Applications

should read AI until it returns 0x00, indicating a successful startup (coordinator) or join

(routers and end devices)

CRE

0 - 0xFF

[read-only]

ATCommandOptionsCommands

AT

Command

Name and Description

Node

Type

Parameter Range Default

Command Mode Timeout. Set/Read the period of inactivity (no valid commands

received) after which the RF module automatically exits AT Command Mode and returns

to Idle Mode.

CRE 2 - 0x028F [x 100 ms] 0x64 (100d)

Exit Command Mode. Explicitly exit the module from AT Command Mode. CRE -- --

Guard Times. Set required period of silence before and after the Command Sequence

Characters of the AT Command Mode Sequence (GT + CC + GT). The period of silence

is used to prevent inadvertent entrance into AT Command Mode.

CRE

1 - 0x0CE4 [x 1 ms]

(max of 3.3 decimal sec)

0x3E8

(1000d)

Command Sequence Character. Set/Read the ASCII character value to be used

between Guard Times of the AT Command Mode Sequence (GT + CC + GT). The AT

Command Mode Sequence enters the RF module into AT Command Mode.

The CC command is only supported when using AT firmware: 20xx (AT coordinator),

22xx (AT router), 28xx (AT end device).

CRE 0 - 0xFF

0x2B 

(‘+’ ASCII)

1 2 3 4 5 6 7 8 9 10

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Digi XBee User Manual Page 8

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