Command descriptions
9XTend-PKG-R RS-232/485 RF Modem User Guide
41
BD (Interface Data Rate) command
<Serial Interfacing> The BD command is used to set and read the serial interface data rate (baud rate) used between
the RF modem and host. This parameter determines the rate at which serial data is sent to the modem from the host.
Modified interface data rates do not take effect until the CN (Exit AT Command Mode) command is issued and the
system returns the 'OK' response.
When parameters 0-8 are sent to the modem, the respective interface data rates are used (as shown in the table on
the right).
The RF data rate is not affected by the BD parameter. If the interface data rate is set higher than the RF data rate, a
flow control configuration may need to be implemented.
The range between standard and non-standard baud rates is invalid.
AT Command: ATAT
Binary Command: 0x05 (5 decimal)
Parameter Range:2 - (ATST-3), up to 0x7FFC
[x 100 milliseconds]
Default Parameter Value: 0x0A (10 decimal)
Number of bytes returned: 2
Related Commands: BT (Guard Time Before), CC (Command Sequence Character)
AT Command: ATBD
Binary Command: 0x15 (21 decimal)
Parameter Ranges: 0 - 8 (standard rates)
0x39 - 0x1C9C38 (Legacy Modem non-standard rates)
0x4B0 - 0x2580 and 0x4B00 - 0x1C9468 (XTend vB Modem non-standard rates)
Parameter
Configuration (b/s)
0
1200
1
2400
2
4800
3
9600
4
19200
5
38400
6
57600
7
115200
8
230400
Default Parameter Value: 3