GE MDS MDS iNET 900, Reference Manual

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72 iNET Series Reference Manual 05-2806A01, Rev. H
connection is closed, or the link is interrupted. In this mode, the trans-
ceiver behaves the same, whether it is an Access Point or a Remote.
(See Figure 2-36 and Table 2-1)
NOTE: The TCP session has a timeout of 10 minutes (600 seconds). If
inactive for that time, it will be closed.
The transceiver will
offer the port again for connection after this time expires.
Establishing a
Connection
From the PC, establish a TCP connection to the IP address of the
Remote transceiver and to the IP port as configured above (30010—
COM1, 30011—COM2). 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 2-36. IP-to-Serial Application Diagram
2.6.7 Point-to-Multipoint IP-to-Serial Application
Example
The operation and data flow for this mode is very similar to
Point-to-Point serial-to-serial application, except that it uses multicast
addressing. The primary difference is that the PC uses UDP to commu-
nicate with all of the Remotes. Upon receiving the packet, each Remote
strips the data out of the UDP packet and sends it from its
COM
port.
Likewise, data presented at any of the Remotes’
COM
ports is pack-
etized, sent to the PC using the Access Point (see Figure 2-37 and
Table 2-2 on Page 73.
Ethernet
Crosssover
RTU
EIA-232
Computer
or Network
192.168.0.10 192.168.0.1 192.168.0.2
LA
N
COM
1
COM
2
PW
R
LIN
K
Remote
Access Point
Table 2-1. Serial Port Application Configuration
IP-to-Serial Connection
Transceiver
Location Menu Item Setting
Access Point None is required None is required
Remote Unit IP Address 192.168.0.2
Status Enabled
IP Protocol TCP
Baud Rate 9,600 (Example)
Flow Control None
Local IP Port 30011