Digi Connect WAN Series User Manual page 140

Digi Connect WAN Family web interface
RealPort Settings:
n
Enable Keep-Alives: Enables the sending of RealPort keep-alives. RealPort protocol sends
l
keep-alive messages approximately every 10 seconds to connected devices indicating the
connection is still alive. RealPort keep-alives are different from TCP keep-alives, which are
done at the TCP layer.
Note that RealPort keep-alives generate additional traffic which may be undesirable in
situations where traffic is measured for billing purposes.
Enable Exclusive Mode: Exclusive mode allows a single connection from any one RealPort
l
client ID. If you enable this setting and a subsequent connection occurs that has the same
source IP as an existing connection, the existing connection is forcibly reset under the
assumption that it is stale.
Device Initiated RealPort Settings:
n
Index: An empty list means there are no configured device-initiated RealPort connections.
l
Host or IP Address: The IP address or DNS name of the client to connect to.
l
Port: The network port to connect to on the client. The default port for VNC servers is
l
8771.
Retry Time: The amount of time in seconds to wait before reattempting a failed
l
connection to the client.
Industrial Automation-Modbus-Bridge
Industrial Automation is supported in these Digi devices: Digi Connect WAN IA and Digi Connect WAN
3G IA.
Currently, from the web interface, it is only possible to select a different port profile than
Industrial Automation, or change the serial port settings, such as baud rate and parity. If changes
are needed from the settings established by the Industrial Automation port profile, use the set ia
command from the command-line interface.
For more information on Industrial Automation, see the set ia command description in the Digi
Connect® Family Command Reference and the application note Remote Cellular TCP/IP Access to Modbus
Ethernet and Serial Devices available on the
Known limitations
You can use Digi RealPort only when the Modbus Bridge function is disabled. You cannot use
n
RealPort with Modbus/RTU or ASCII to access the Modbus Bridge function.
The outgoing slave idle time used for remote Modbus IP-based slaves does not always close
n
idle sockets predictably.
While the Modbus bridge is active, do not attempt to "Port Forward" TCP 502 or UDP 502 to
n
local Modbus/TCP servers while the Modbus Bridge is active. This causes neither function to
work. Disable the Modbus Bridge if you want traditional Router/NAT function for Modbus/TCP
port 502.
Enable or disable Modbus Bridge
To enable or disable Modbus Bridge, choose one of the following options:
Digi Connect WAN Family User Guide
Configuration through the web interface
Digi Support site.
140