122 / 413
4/56
Architectures
(
continued)
SCADA architecture on Modbus and shared I/O on Ethernet Modbus/TCP
As in the typical architecture on page 4/54, the Premium Hot Standby system I/O are
shared on an Ethernet Modbus/TCP network (with a bus topology as in the example
below). However, the SCADA interface is connected to the standby system via a
Modbus serial link.
The Ethernet Modbus/TCP network modules
no. 4 - M
are configured as “monitored”
so that they trigger the Hot Standby changeover in the event of a failure (of the
Ethernet module or the electrical connection and its switch) (see page 4/54).
SCADA supervision system
In this type of architecture, redundancy of the SCADA station, based on the Vijeo
Citect or Monitor Pro supervision software, is provided by a Modbus serial link on
which the SCADA station is master. The Primary and Standby Premium PLCs via
their
TSX SCY 21601
communication module equipped with the
TSX SCP 114
RS
485
PCMCIA card have the slave addresses “n” and n+1 respectively.
A failure triggers the changeover so that the Standby PLC becomes the Primary PLC
and automatically switches the Modbus addresses, the address of the new Primary
PLC becoming “n” and that of the old Primary PLC becoming “n+1”.
Architectures
(
continued)
Presentation:
page 4/52
Description:
page 4/53
Functions:
pages 4/58 ...
References:
pages 4/60 ...
31
31
34
15
16
17
18
19
1
2 3 4-
M
8
2 3 4-
M
8
9
9
10
11
12
10
13
12
12
33
SCADA
Vijeo Citect
Monitor Pro
Primary Premium
Standby Premium
Modbus master
Modicon M340
Modicon STB Altivar 61 Modicon
OTB
Magelis XBT GT
Slave
Slave
Ethernet Modbus/TCP
CPU Sync link
Modbus
Redundant components:
1
Non-expandable rack with 6, 8 or 12 positions
TSX RKY
pp
(
single-rack configuration) or expandable with 4, 6, 8 or 12
positions
TSX RKY
pp
EX
(
multi-rack configuration)
2
Power supply module
TSX PSY
ppp
M
3
Hot Standby processor
TSX H57 24M/44M
4-
M
“
Monitored” Ethernet Modbus/TCP network module
TSX ETY 4103/5103
(
version
u
sv 4.0)
8
Serial link communication module
TSX SCY 21601
on which
the integrated channel cannot be used in this type of
architecture
9
Isolated RS 485 PCMCIA card
TSX SCP 114
used in
Modbus slave protocol
Shared components on the Ethernet Modbus/TCP network:
15
Modicon M340 automation platform with processor with
integrated Ethernet port
BMXP34 2020/2030
16
Modicon STB modular distributed I/O with network interface
module
STB NIP 2212
17
Altivar 61/71 variable speed drive with communication card
VW3 A3 310
18
Optimum Modicon OTB distributed I/O, with interface
module
OTB 1E0 DM9LP
19
Magelis XBT GT graphic display terminal with embedded
Ethernet port
XBT GT
pp
30/40
Other possible shared components:
(
see page 4/54)
Ethernet cabling components:
10
ConneXium unmanaged switch with 5 ports
10
BASE-T/100BASE-TX
499
NES 251 00
11
CPU Sync link, copper crossover cable
490
NTC 000
ppp
12
Copper straight-through cable
490
NTW 000
ppp
13
Copper crossover cable
490
NTC 000
ppp
Modbus cabling components:
31
Passive T-junction box, connection on screw terminals with
line terminator
TSX SCA 50
33
Drop cable for PCMCIA card with flying leads at at one end
TSX SCP CM 4030
(3
m long)
34
RS 485 double shielded twisted pair trunk cable
TSX CSA
100/200/500
(100, 200
or 500 m long)
Modicon Premium automation
platform
Hot Standby system
Unity Pro software
2
1
3
4
5
6
7
8
9
10