5 Applications
5.1 Basic Applications
40
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
5.1.3
I/O Expansion for the Connection to Systems Control, a Central Controller, or
a Protection Device (Electric)
If SICAM I/O Units are used as I/O expansion, according to Figure 5-3, binary signals are exchanged between
a device (systems control with Modbus TCP/UDP) and the devices connected to the SICAM I/O Units.
In this application, the SICAM I/O Unit can also be used by systems control across a larger distance (remote I/
O connection). In this case, transmission takes place, for example via a long-range Ethernet connection (for
example LAN). Usable cables see chapter 2.2, section Accessories. Examples for remote transmission see
chapter 5.2.
Figure 5-3
I/O Expansion for the Connection to Systems Control, Using Integrated Switch
Device
(Systems control with
Modbus TCP/UDP, or
IEC 61850)
Modbus client /
IEC 61850 client
E
the
rnet i
n
ter
fa
c
e
SICAM I/O Unit 1
Modbus server /
IEC 61850 server
Binary
inputs
Relay
outputs
E
tne
rn
et s
w
it
c
h
Indication
from Remote
E
tne
rn
et s
w
it
c
h
Modbus TCP/
Modbus UDP/
IEC 61850
SICAM I/O Unit 2
Modbus server /
IEC 61850 server
SICAM I/O Unit n
Modbus server /
IEC 61850 server
Indication
from Remote
Relay
outputs
Binary
inputs
LAN/WLAN
Protection Device
with GOOSE
E
the
rn
et i
n
ter
fa
c
e
NOTE
In this application, the SICAM I/O Unit can only be operated in multipoint-partyline configuration. Operation in
multipoint-ring configuration is not possible.
MAN_SICAM_IO-Unit_7XV5673_US.book Page 40 Thursday, May 10, 2012 10:59 AM