MDS iNET 900 - Point-To-Multipoint Serial-To-Serial Operation and Data Flow

38 MDS iNET 900 User’s Guide MDS 05-2806A01, Rev. A
2.5.5 Point-to-Multipoint Serial-to-Serial Operation
and Data Flow
The operation and data flow for this mode is very similar to
Point-to-Point Serial-to-Serial. The primary difference is that data pre-
sented at the Access Point’s
COM port will be packetized and sent via
UDP to all of the Remotes. Upon receiving the packet all of the Remotes
strip the data out of the UDP packet and send it out their
COM port. Like-
wise, data presented at any of the Remotes’
COM ports is packetized,
sent to the Access Point, stripped, and sent out the Access Point’s
COM
port.
Invisible place holder
Figure 2-18. Point-to-Multipoint Serial-to-Serial Diagram
Remote Unit (COM2)
1
Enable Enabled
Mode Serial-to-Serial
Baud Rate 9,600 (Example)
Flow Control X-ON/X-OFF (Example)
Send to Address 192.168.0.1
(IP address of the iNET Access
Point)
Send to Port 30011
Receive on Port 30011 (Not used)
Receive on
Address
0.0.0.0 (Not used)
Seamless Mode Disabled
Delimiter Chars 0
Latency Chars 0
1. Either COM port can be used, but they must be the same ones at both
ends of the link. Both COM ports can be used simultaneously for two
independent data channels.
Table 2-2. Serial Port Configuration Example (Continued)
iNET Unit Location Menu Item Setting
192.168.0.2
192.168.0.3
192.168.0.4
EIA-232
Terminal
or Computer
RTU
RTU
RTU
EIA-232
EIA-232
EIA-232
192.168.0.10 192.168.0.1
192.168.0.2
iNET 900
Access Point
L
A
N
C
O
M
1
C
O
M
2
P
W
R
L
IN
K
iNET 900
Remote
L
A
N
C
O
M
1
C
O
M
2
P
W
R
L
IN
K
iNET 900
Remote
L
A
N
C
O
M
1
C
O
M
2
P
W
R
L
IN
K
iNET 900
Remote