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9XTend™
OEM
RF
Module
–
Product
Manual
v1.2.4
©
2005
MaxStream,
Inc.
Confidential
&
Proprietary
21
CD (GPO2 Configuration) Command
AT Command: ATCD
Binary Command: 0x28 (40 decimal)
Parameter Range: 0 – 2
Parameter
Value
Configuration
0 RX
LED
1 Default
high
2 Default
low
Default Parameter Value: 2
Number of bytes returned: 1
<Serial Interfacing> CD Command is used to
select/read the behavior of the GPO2 line (pin 3).
CF (Number Base) Command
AT Command: ATCF
Binary Command: 0x1F (31 decimal)
Parameter Range: 0 – 2
Parameter
Value
Configuration
0
Commands utilize default
number base; decimal
commands may output units
1
All commands are forced to
unsigned, unit-less hex
2
Commands utilize their default
number base; no units are
output
Default Parameter Value: 1
Number of bytes returned: 1
<Command Mode Options> CF command is used
to set/read command formatting setting.
The following commands are always entered and
read in hex, no matter the CF setting:
VR (Firmware Version), HV (Hardware Version),
KY (AES Encryption Key).
CN (Exit Command Mode) Command
AT Command: ATCN
Binary Command: 0x09 (9 decimal)
<Command Mode Options> CN Command is used
to explicitly exit AT Command Mode.
CS (GP01 Configuration) Command
AT Command: ATCS
Binary Command: 0x1F (31 decimal)
Parameter Range: 0 – 4
Parameter
Value
Configuration
0 RS-232
flow control
1
RS-485 TX enable low
2 high
3
RS-485 TX enable high
4 low
Default Parameter Value: 0
Number of bytes returned: 1
Related Commands: RT (GPI1 Configuration),
TO (GP01 Timeout)
<Serial Interfacing> CS Command is used to
select the behavior of the GP01 pin (pin 9). This
output can provide RS-232 flow control, control
the TX enable signal (for RS-485 or RS-422
operations), or set the default level for the I/O
line passing function.
By default, GP01 provides RS-232
(Clear-to-
Send) flow control.