User Manual

CompactRF
TM
Operating Manual: Chapter 3 Modes of Operation 13
3.2.1 AT Command Interface
At this point you should see a menu similar to the following appear:
BAUD = 9600
E1 Q0 V1 W0
DCD &C1 DTR &D0 Framing &E0 Handshaking &K3 DSR &S1
S0=1 S2=43 S3=13 S4=10 S5=8
Operating Mode S101=1 Serial Baud Rate S102=7
Wireless Link Rate S103=2 Network Address S104=1
Unit Address S105=1 Hop Pattern S106=0
Encryption Key S107=1 Output Power S108=2
Hop Interval S109=4 Data Format S110=1
Packet Min Size S111=1 Packet Max Size S112=43
Packet Retransmissions S113=1 Quick enter to command S119=1
Packet Repeat Interval S115=1 Character Timeout, ms S116=8
RTS/DCD Framing, ms S120=0 DCD Timeout, ms S121=0
Secondary Hop Pattern S206=2 Packet Retry Limit S213=2
Average RSSI value S123= -0 dBm Modbus Mode S117=0
Roaming S118=0 Packet Size Control S114=0
Remote Control S122=0
OK
The MHX-2400 is controlled through an AT Command line interface, using a
command set which is very similar to a traditional Hayes telephone modem
command set.
All line entries must be preceded by the characters ‘AT’. The characters
‘AT’ are known as the attention characters and must be typed at the
beginning of each command line. For example, to change the operating
mode, type:
ATS101=2 <ENTER>
The modem should respond with ’OK.’ The above command will set the
operating mode to Master Point-to-Point.
Register settings are not immediately stored to non-volatile memory,
therefore if the modem is powered down at this point, the Operating Mode
would revert to its previous value. To store any recently updated command
registers, the following “write” command must be entered.
AT&W <ENTER>
3.3 Switching Between Command and Data Modes
Your modem must be in command mode for it to execute a command. If
you send characters when the modem is in data mode, the modem transmits
the characters over the air.
Depending on its settings, the modem will either power up in command mode
or data mode. Normally, when first received from the factory, the unit will
power up into data mode. During the first five seconds after power-up, the
user is given the opportunity to avoid entering into data mode but instead
enter into command mode by typing ‘MHX’.