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Operation
5 Operation
5.1 AT Mode
Page 24 of 63
To enter the AT mode disconnect the device from mains and set the DIP
switch (2.3) to „ON". Connect the device to mains again.
If the AT mode is active, the GSM module inside the ZDUE-GPRS-PLUS-VI
can directly be controlled by AT-Befehl entered at the meter interface. By it
the ZDUE-GPRS-PLUS-VI can for example be used as a GSM terminal
adapter for data connections via the GSM network.
After pushing the service button while the ZDUE-GPRS-PLUS-VI is in the
meter mode and switching back into the the AT mode, the meter inferface is
setup to:
19200 bit/s, 8N1
Swich into the meter mode to change the bitrate (eg. From 19200 bit/s to
9600 bit/s). Switch back into the AT mode.
If in meter mode after pushing the service nbutton another bitrate (start bit
rate) is selected, this bitrate is also vald after switching into the AT mode
In AT-Modus always the character format 8N1 is used.
A remote configuration is not possible in AT mode.
To activate the automatic answer, please enter the AT commad ATS0=1.
Attention
Please take care, that the hardware handshake (RTS/CTS) of the terminal
software needs to be switched off.
Attention
Do not modify in any case the baudrate of the GSM engine by AT command!
ZDUE-GPRS-PLUS-VI
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