5 Applications
5.1 Basic Applications
38
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
5.1
Basic Applications
5.1.1
I/O Mirror
When using the SICAM I/O Units as I/O mirror according to Figure 5-1, the devices transmits the binary signals
bi-directional. The transmission takes place between a server and a client.
Figure 5-1
I/O Mirror, Bidirectional Transmission between Server and Client
I/O Mirror Server – Client
The binary signals get from the binary inputs of the SICAM I/O Unit 1 (server) to the parameterized commu-
nication interface (FO, electrical RS485, or Ethernet). The converted signal is transmitted from the connected
lines to the SICAM I/O Unit 2 (client).
The signal is lead to the relay module via the communication interface of the client. Depending on the param-
eterization, the relay contacts control the relay outputs. Therefore the parameterized indications correspond to
the switching states of the relays.
Via the relay contacts, voltages up to AC/DC 250 V and currents up to AC/DC 5 A can be switched.
I/O Mirror Client – Server
The transmission of the binary signals is performed from the SICAM I/O Unit 2 (client) to the SICAM I/O Unit 1
(server) in the same way as from server to client. From the user view, a simultaneous transmission of the binary
states takes place in both directions via a sure communication protocol via the respective connection between
the devices.
Extension of the transmission route
An extension of the transmission route for the binary signal transmission is possible. The following devices may
be used for example:
•
Optical Repeater 7XV5461
•
RS485-FO Converter 7XV5650
•
Communication Converter 7XV5662 (KU-KU, X.21/G.703.1, G.703.6).
SICAM
I/O Unit 1
Server
C
o
m
m
unic
a
tion
in
ter
fa
c
e
SICAM
I/O Unit 2
Client
Binary
inputs
Indication
from Remote
Serial
RS485/FO
or
Ethernet
C
o
mmu
n
ica
ti
o
n
in
te
rf
a
c
e
Indication
from Remote
Relay
outputs
Binary
inputs
Relay
outputs
NOTE
Please note additional time delays of devices (see their documentation) within the transmission route.
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