Datasheet

Operating Modes INSYS ETHERNET 5.X
26 Nov-06
5 Operating Modes
5.1 Command Mode (Offline)
The device is offline during command mode, i.e. there is no IP connection and it can be
addressed via AT commands.
After the INSYS Ethernet was switched on or after a reset, the device will automatically
be in command mode.
Use the commands ATT and ATU in command mode to define the type of the next con-
nection mode (TCP or UDP). Only incoming connections with the set protocol type will be
accepted. If no protocol was specified for an outgoing connection, the same setting will
apply.
Changing the mode
When an online data connection (TCP/UDP) is established, the command mode is ended.
A data connection can be established as follows:
 Manually outgoing connection (AT command: ATD...)
 Automatically outgoing connection (configuration: leased line operation)
 Manually incoming connection (AT command: ATA)
 Automatically incoming connection (configuration: ATS0=1)
After the connection is terminated, the command mode is re-activated.
5.2 Command Mode (TCP/UDP)
The device is online. Data from the RS232 interface is transmitted to the remote terminal
via Ethernet and vice versa. AT commands are now only accepted via remote configura-
tion, but not via RS232.
Changing the mode
When the online data connection is terminated, the command mode is activated. The
data connection can be terminated as follows:
 Disconnect via the remote terminal on TCP level
 Escape sequence <pause>+++<pause> via RS232
 Deactivate the DTR control line (AT&D)
 Trigger the idle connection control (AT#DTC)
 Detect a connection error (AT#KEEP)
 Short one-time pulse on the reset line
 Real reset (>3s)