36 MDS iNET 900 User’s Guide MDS 05-2806A01, Rev. A
2.5.3 IP-to-Serial Operation and Data Flow
In this mode, the iNET 900 provides a connection-oriented IP-to-Serial
service for point-to-point Ethernet/IP to serial port connectivity.
iNET 900 monitors a TCP socket on the receive on IP port for a connec-
tion. Once a connection has been received, the iNET 900 will begin
monitoring the serial port and the network socket for incoming data.
(See Figure 2-16 and Table 2-1)
Serial-to-Network
transmission
The iNET 900 monitors the serial port for incoming data. All incoming
data is sent to the other end of the TCP connection.
Network-to-Serial
reception
The iNET 900 monitors the socket for incoming data. When a packet is
received, the data is transmitted out the serial port.
In this mode, the iNET 900 behaves the same, whether it is an Access
Point or a Remote.
Establishing a
Connection
From the PC, establish a TCP connection to the IP address of the iNET
Remote and to the IP port as configured above (typically 30011). A
Telnet client application can be used to establish this connection. Data
can now be sent between the PC and the RTU or other connected device.
Invisible place holder
Figure 2-16. IP-to-Serial Connection Diagram
Ethernet
Crosssover
RTU
EIA-232
Computer
or Network
192.168.0.10 192.168.0.1 192.168.0.2
L
A
N
C
O
M
1
C
O
M
2
P
W
R
L
IN
K
iNET 900
Remote
iNET 900
Access Point
Table 2-1. Serial Port Configuration Example
IP-to-Serial Connection
iNET Unit Location Menu Item Setting
Access Point None is required. None is required.
Remote Unit IP Address 192.168.0.2
Enable Enabled
Mode IP-to-Serial
Baud Rate 9,600 (Example)
Flow Control None
Receive on Port 30011
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