Baer UniMod Ethernet Operation Manual - page 10
UniMod Ethernet
10
at&w
No answer because of atq1
Saves the current parameter setting in the user-
defined profile. This settings are active after every
resumption of power supply!
Attention: At the end of every programming the settings have to be saved permanently
using the at&w command. This ensures that the parameters are restored after
power failure.
Example:
Establish connection PC to modem (e.g. using the parameterization adapter). Start the terminal
program and set data rate correctly.
The modem does not reply to a simple "AT" command by default. In order to test communica-
tion you have to use a command which results always in an answer (e.g. "AT&V" displays the
actual configuration). This should enable a readable output on your screen.
Input "AT&F" to restore factory settings. Modem should reply "OK".
Select automatic answering: "ATS0=1", Modem reply: "OK".
DTR-control is ignored: "AT&D0", Modem reply: "OK".
Disable local flow control: "AT&K0", Modem reply: "OK".
Disable echo: Enter "ATE0", Modem reply: "OK".
With this setting the modem does not echo characters sent by the target device. Some meters
may not communicate correctly if they receive their own output.
Suppress modem result codes: Enter "ATQ1". No answer from modem.
This prevents the modem from sending result codes to the target device. The result codes can
cause trouble with some meters.
Save current parameters: Enter "AT&W". No answer if ATQ1 command has been issued be-
fore.
Parameterization finished.
Dial
The modem picks up and dials in accordance with the dialing string given by the ATD command,
e.g.: ATD192.168.1.220:1234
Disconnect
After the escape sequence +++ the modem hangs up.
Data Transmit Control (DTC)
Data transmit control is a firmware integrated feature for supervising the online data transfer. The
feature prevents the modem from staying online infinitely, even if no data are transferred at all.
An arbitrary time span from 10 to 255 seconds (by 10 seconds steps) can be programmed. DTC is
disabled if the time is set to 0 (default value). If the value is not 0, the time counter starts running
immediately after the connection is established. As soon as it is run out the modem is reset, which
causes it to hang up.
The time counter is reset by every transmitted or received character. That means, the modem
holds the line for
of DTC.
Keep Alive
Keep alive is a firmware integrated feature for supervising the TCP-IP network line. The feature
prevents the modem from staying online infinitely, even if the LAN network don’t work.
An arbitrary time span from 10 to 2550 seconds (by 10 seconds steps) can be programmed. Keep
alive is disabled if the time is set to 0 (default value). If the value is not 0, the keep alive probes will
be send every x seconds. As soon as it is run out the modem is reset, which causes it to hang up.