AC4490 User Guide
Version 4.5
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Command Descriptions
Enter AT Command Mode
Prior to sending this command, the OEM Host must ensure that the transceiver’s RF transmit buffer is empty.
If the buffer is not empty, the radio will interpret the command as data and it will be sent over the RF. This
can be accomplished by waiting up to one second between the last packet and the AT command.
Note: RF Packet Size must be set to a minimum of 6 to use this command.
Command: <0x41> <0x54> <0x2B> <0x2B> <0x2B> <0x0D>
Number of Bytes Returned: 4
Response: <0xCC> <0x43> <0x4F> <0x4D>
Exit AT Command Mode
The OEM Host should send this command to exit AT Command mode and resume normal operation.
Command: <0xCC> <0x41> <0x54> <0x4F> <0x0D>
Number of Bytes Returned: 4
Response: <0xCC> <0x44> <0x41> <0x54>
Status Request
The OEM Host issues this command to request the status of the transceiver.
Command: <0xCC> <0x00> <0x00>
Number of Bytes Returned: 3
Response: <0xCC> <Version> <Status>
Parameter Range:
<Version> = Firmware version of radio
<Status> = 0x00: Server
0x01: Client in Range
0x03: Client out of Range
Change Channel
The OEM Host issues this command to change the channel of the transceiver.
Command: 0xCC 0x02 <Channel>
Number of Bytes Returned: 2
Response: 0xCC <Channel>
Parameter Range: <Channel> = RF Channel in use
