5 Applications
5.1 Basic Applications
39
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
5.1.2
Unidirectional Binary Signal Transmission
When using the SICAM I/O Units for unidirectional binary signal transmission according to Figure 5-2, the de-
vices transfer binary signals unidirectional from one client to several servers. Their number depends on the net-
work topology. In this application, the transmission only takes place in one direction. The device has to be set
to this mode.
Figure 5-2
I/O Mirror, Unidirectional Transmission between Client and Servers
The binary signals get from the binary inputs of the SICAM I/O Unit 1 (client) to the parameterized serial
communication interface (FO or electric RS485). The converted signal is transmitted from the connected lines
to the SICAM I/O Units 2 to n (server) simultaneous.
The signal is transmitted to the relay modules via the serial communication interfaces of the SICAM I/O Units
2 to n (server). Depending on the parameterization, the relay contacts control the relay outputs. Therefore the
parameterized indications correspond to the switching status of the relays.
If using n devices, up to n × 6 relay outputs can be used.
SICAM
I/O Unit 1
Client
CO
M
i
n
te
rf
a
c
e
SICAM
I/O Unit 2
Server
Binary
inputs
Relay
outputs
Indications
from Remote
only serial,
unidirectional
SICAM
I/O Unit 3
Server
SICAM
I/O Unit 4
Server
CO
M
CO
M
C
O
M
SICAM
I/O Unit n
Server
Bus cable
(see
accessories ,
chapter 2.2)
Indications
from Remote
Indications
from Remote
Relay
outputs
Relay
outputs
NOTE
A star coupler is required for serial optical transmission. Also compare Figure 5-8 with optical repeaters.
MAN_SICAM_IO-Unit_7XV5673_US.book Page 39 Thursday, May 10, 2012 10:59 AM
