Server name, Application example using hot standby mode 2, 6 server name – ProSoft Technology PS-QS-1x10-0781 User Manual
Page 67: 7 application example using hot standby mode 2, Figure xv – hot standby mode 2 application
FieldServer Configuration Manual
Page 67 of 90
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10.3.6 Server Name
NOTE: The Client Node Descriptors used to have to have CONFIG.CSV file entries that describe the adapter and IP
address of the AC2PA connection and backup connection – this is no longer required, the Client Node Descriptor
now only needs to be given the Server_Name of the source of the data. The Server names are configured in the
HSB_P.INI and HSB_S.INI files for each physical FieldServer.
10.3.7 Application example using Hot Standby Mode 2
Consider the application in Figure XV where the highest redundancy level possible is required. The application has
a mixture of Single and Dual port Servers, and Dual Redundant Clients.
Figure XV – Hot Standby Mode 2 Application.
Primary and auxillary FS-X40 FieldServers are used to allows RS-232 connection to more than 8 PLC’s.
The dark blue boxes represent the physical FieldServers.
The light gray boxes represent the information Servers
The thin lines represent the RS-232/RS-485 serial connections.
The physical Ethernet connections are NOT represented.
The thick solid and dotted lines represent the logical Ethernet connections possible from FieldServer 1 to
all possible sources of data. Connections from FieldServer 2 are not shown, but do exist.
Redundancy is Achieved as Follows:
When FieldServer 1 fails, FieldServer 2 takes over and remains Active until FieldServer 2 fails at which
point FieldServer 1 takes over.
If the PEX tier of FieldServer1 fails, the SCADA Tier of FieldServer 1 will get the data from the PEX Tier of
FieldServer 2.
PLC5
PLC6
PLC7
PLC8
PLC1
PLC2
PLC3
PLC4
UPS
EPLCG1
Information
Client
Virtual Bridge on Tier 2
(PEX Tier)
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
Virtual Bridge on Tier 1
(scada Tier)
Virtual Bridge on Tier 2
(PEX Tier)
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
Virtual Bridge on Tier 1
(scada Tier)
Information Server
FieldServer 3
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
Information Server
FieldServer 4
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
P
1
N
2
N
1
V
N
R
2
R
1
P
8
P
7
P
6
P
5
P
4
P
3
P
2
PLC10
PLC9
Physical
FieldServer 2
(primary)
Physical
FieldServer 1
(primary)
Physical
FieldServer 3
(auxiliary)
Physical
FieldServer 4
(auxiliary)