Microwave Data Systems MDS entraNET 900, Системное руководство, Страница: 48 / 148

40 MDS entraNET 900 System Guide (Preliminary) MDS 05-4055A01, Rev. A
2.5.6 Mixed Modes
Note that in this example, the TCP mode does not involve the Access
Point. Thus, the transceiver in a single network can run in both modes at
the same time. In other words, some Remotes can be configured for TCP
mode while others can be configured (along with the Access Point) for
UDP mode.
In this configuration, the Host PC can use both data paths to reach the
RTUs. This may be helpful when a mixed collection of RTUs is present
where some RTUs can operate in a broadcast form while others cannot.
(See
Figure 2-19 on Page 40 and Table 2-4 on Page 41 )
Operation and Data Flow
• Communicate with RTU A by Telneting to Remote 1, port 30011.
• Communicate with RTU B by Telneting to Remote 2, port 30011.
• Communicate with RTUs C and D by sending and receiving data
from the Access Point’s
COM
port.
• All communication paths can be used simultaneously.
Invisible place holder
Figure 2-19. Mixed-Modes Application Diagram
Send to Port 30011
Receive on Port 30011
Receive on Address 224.254.1.1 —
Multicast Address
2
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.
2. This address is an example only. Any Class D IP address will work.
Table 2-3. Serial Port Application Configuration
MDS entraNET 900
Unit Location Menu Item Setting
EIA-232
Terminal
or Computer
RTU–C
EIA-232
EIA-232
EIA-232
RTU–D
EIA-232
LA
N
COM
1
COM
2
PW
R
LIN
K
i
NET 900
Remote 4
Ethernet
Crosssover
RTU–B
RTU–A
i NET 900
Access Point
LA
N
COM
1
COM
2
PW
R
LIN
K
i NET 900
Remote 1
LA
N
COM
1
COM
2
PW
R
LIN
K
i
NET 900
Remote 2
LA
N
COM
1
COM
2
PW
R
LIN
K
i NET 900
Remote 3