Digi TransPort - Page 135

AT commands
Digi TransPort User Guide 135
S31 ASY Interface Speed
Units: N/A
Default: 0
Range: 0-11
Register S31 is used to set the speed and data format for the ASY port to which you are currently
connected.
The default value for ASY 0 is 0, such as the port speed/data format is not set to a specific value,
it is determined automatically from the AT commands that you enter.
The default value for ASY 1, 2 and 3 is 3, such as the ports will only accept AT commands at
115,200bps (8 data bits, no parity and 1 stop bit).
To set the speed of one of the ports to a particular value, the appropriate register should be set
to the required value from the following table:
For example, to change the speed of ASY 1 to 38,400bps, connect your terminal to that port with
the speed set to 9600bps. Enter the command:
ats31=5
then change the speed of your terminal to 38,400bps before entering any more AT commands.
The data format used when the ATS31=n command is entered is selected as the data format for
all further commands.
The auto-detect option is only available for ASY0 and ASY1.
S33 DTR Dialing
Units: N/A
Default: 0
Range: 0, 1
S33 is used to enable or disable DTR dialing for the port. When DTR dialing is enabled, the router
will dial the number stored for that port (see AT&Z) when the DTR signal from the terminal
changes from Off to On.
S31 Port Speed (bps) S31 Port Speed (bps)
0 Auto-detect 6 19200
1 Reserved 7 9600
2 Reserved 8 4800
3 115200 9 2400
4 57600 10 1200
5 38400 11 300