User Manual

Operation About remote configuration commands

XBee/XBee-PRO S2C 802.15.4 RF Module User Guide

CAUTION! It is important to set the short address to 0xFFFE when sending to a long

address. Any other value causes the long address to be ignored. This is particularly

problematic in the case where nodes are set up with default addresses of 0 and the 16-

bit address is erroneously left at 0. In that case, even with a correct long address the

remote command goes out to all devices with the default short address of 0, potentially

resulting in harmful consequences, depending on the command.

Send a remote command

To send a remote command populate the Remote AT Command Request frame (0x17) with:

1. The 64-bit address of the remote device

2. The correct command options value

3. The command and parameter data (optional). If and only if all nodes in the PAN have unique

short addresses, then remote configuration commands can be sent to 16-bit short addresses

by setting the short address in the API frame for Remote AT commands. In that case, the 64-bit

address is unused and does not matter.

If you want to receive a command response, set the Frame IDto a non-zero value.

Apply changes on remote devices

Any changes you make to the configuration command registers using AT commands do not take effect

until you apply the changes. For example, if you send the BD command to change the baud rate, the

actual baud rate does not change until you apply the changes. To apply changes:

1. Set the apply changes option bit in the Remote AT Command Request frame (0x17).

2. Issue an AC (Apply Changes) command to the remote device.

3. Issue a WR + FR command to the remote device to save changes and reset the device.

Remote command responses

If the remote device receives a remote command request transmission, and the API frame ID is non-

zero, the remote will send a remote command response transmission back to the device that sent the

remote command. When a remote command response transmission is received, a device sends a

remote command response API frame out its UART. The remote command response indicates the

status of the command (success, or reason for failure), and in the case of a command query, it includes

the register value. The device that sends a remote command will not receive a remote command

response frame if:

n The destination device could not be reached

n The frame ID in the remote command request is set to 0.