Specifications

MDS 05-4055A01, Rev. A MDS entraNET 900 System Guide 101
5.1.5 Mixed Mode Application Example
In this configuration, the Host PC can use both TCP and Serial-to-Serial
data paths to reach the RTUs. This may be helpful when a mixed collec-
tion of RTUs is present where some RTUs operate via Ethernet while
others are polled via a serial port. (See Figure 5-5 on Page 101 and
Table 5-6 on Page 102)
Operation and Data Flow
• Communicate with RTUs A and B by sending and receiving data from
the AP’s COM2 port.
• Communicate with RTUs C and D by Telneting to the IP address of
each RTU.
• All communication paths can be used simultaneously.
Figure 5-5. Mixed-Modes Application Diagram
Byte Format 8N1
Seamless Mode Disabled
Buffer Size 256 Bytes
Inter-Packet Delay 4
Remote Unit (COM2) Mode Data
Baud 19200
Format 8N1
Buffer 256
DelayChars 4
Table 5-5. Point-to-Multipoint Serial-to-Serial Configuration
MDS entraNET 900 Unit
Location
Menu Item Setting
EIA-232
Terminal
or Computer
RTU–C
EIA-232
EIA-232
Ethernet
RTU–D
Ethernet
Ethernet
Crosssover
RTU–B
RTU–A
C
O
M
2
P
W
R
L
I
N
K
C
O
M
1
C
O
M
2
P
W
R
L
I
N
K
C
O
M
1
C
O
M
2
P
W
R
L
I
N
K
C
O
M
1
C
O
M
2
P
W
R
L
I
N
K
C
O
M
1
Access Point
Remote 1
Remote 2
Remote 3
Remote 4
L
A
N
C
O
M
1
C
O
M
2
P
W
R
L
I
N
K