Specifications
100 MDS entraNET 900 System Guide MDS 05-4055A01, Rev. A
5.1.4 Point-to-Multipoint Serial-to-Serial Application
Example
The operation and data flow for this mode is very similar to a
Point-to-Point serial-to-serial application, except that it uses multicast
addressing. The primary difference is that data presented at the Access
Point’s
COM port will be packetized and sent to all of the Remotes. Upon
receiving the packet all of the Remotes strip the data out of the packet
and send it out their
COM port. Likewise, 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 5-4. Point-to-Multipoint Serial-to-Serial Diagram
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 5-4. Point-to-Point Serial-to-Serial Configuration
MDS entraNET 900
Unit Location
Menu Item Setting
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
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
Remote
Remote
L
A
N
C
O
M
1
C
O
M
2
P
W
R
L
I
N
K
Table 5-5. Point-to-Multipoint Serial-to-Serial Configuration
MDS entraNET 900 Unit
Location
Menu Item Setting
Access Point (COM2) Port Status Enabled
Mode Serial-to-Serial
Remote UnitID Broadcast
Remote COM port COM2
Baud Rate 19200