Maxon MA-2020, User Manual

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In manual mode AT commands can be used to prompt the modem to upload the files,
the AT commands themselves will also be included in the .csv file.
AT$$FTPFL
Displays the files waiting to be uploaded
AT$$FTPSC
Will start the FTP connection and upload the files. This command can also be used to
force an upload when in periodic mode. If no WAN connection is currently established
(such as in IP Stack Manual mode) the In will establish the PPP and socket
connections, upload the FTP files then drop the socket and PPP connections.
Modem Emulation TAB
Description
Modem emulation assists in the transition from Circuit Switched Data (CSD) to Packet
Switched Data/IP (PSD). If the control centre management system supports IP but the
field devices only support dialling back to the control centre using CSD, then you can
use the In to emulate the CSD modem interface. The In can also be
configured to act as an IP stack server for incoming connections if necessary.
Intelimax
172.16.0.1
Server 10.0.0.1
Cellular Network
Internet
IP
Connection
Field device
CSD
Emulation
Dialing Process
From the perspective of the field device it will dial out a CSD data call like it always has,
except the In will instead establish an IP stack client connection to the server.
For example the field equipment may dial the following string: ‘ATDT0412123456’, then
wait for the connection to be established by receiving a ‘CONNECT’ message. The
In can be configured to establish an IP stack client connection to one of
several different server IP addresses depending on the number dialled.