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Chapter Four
Configuration
Page
41
Note that some commands will automatically exit command mode. Several commands can be
run together, for example, ATB2&WO is the same as ATB2 and AT&W and ATO
Prior to Configuration
Before configuring a module initially, force the module to its factory default configuration -
either by using the DIP switches (refer section 4.3), or by using the AT&F command. If you are
making a change to an existing configuration, this step is not necessary.
Appendix A details all of the Hayes commands accepted by the WI-MOD-9-D. The following
commands are the most common.
Configuration of addressing
AT&S
System Address Range 0-255 Default set by factory.
AT&G
Group Address Range 0-255. Default 1
AT&U
Unit Address Range 0-127. Default 1. This is also the second group
address for transparent repeaters.
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
115,200 baud
B1
57,600 baud
ATC
Serial Baud Rate
The serial rate can be different
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.