User manual

805U Radio Modem Module User Manual
Page 38 © April 2011
Configuration of Data Rates and Character Type
ATB Radio Baud Rate The radio rate must be the same in all modules
B0 19,200 baud (default) B2 76,800 baud
B1 38,400 baud
ATC Serial Baud Rate The serial rate can be different in different
modules.
C0 115,200 baud
C1 1200 baud C7 28,800 baud
C2 2400 baud C8 31,250 baud
C3 4800 baud C9 38,400 baud
C4 9600 baud (default) C10 57,600 baud
C5 14,400 baud C11 76,800 baud
C6 19,200 baud C12 115,200 baud
AT&Bxx Character Type (Data bits, Stop bits, Parity). “xx” is formed by adding the values
below. Default is 8 data bits / 1 stop bit / no parity.
0 7 Data Bits 0 No Parity
2 8 Data Bits 4 Zero Parity (Parity bit always zero)
0 1 Stop Bit 8 Odd Parity
1 2 Stop Bits 12 Even Parity
For example, AT&B9 will be 7 data bits, 2 stop bits, odd parity. The character type does not
need to be the same for all modules in a system.
Transparent mode
If you have forced the module to factory default configuration, this configuration will not be
necessary. The following commands can be used to change the configuration to transparent
mode.
AT&M0&L1
Transparent repeater
AT&M1&L1
The repeater will use both a primary group address (AT&G) and a secondary group address
(AT&U). Data will be output to the serial port only when received with the primary group
address.
Controlled mode, auto-connect
Master module AT&E1&M2&L2
The module will start up in operating mode and will automatically try to connect to the
destination address saved in AT&Z0 (this is the slave unit). The destination address needs to
be entered - for example,
AT&Z0=24 will store a destination address of 24