5 Applications
5.1 Basic Applications
41
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
Transmission Modbus TCP/UDP Client or IEC 61850 Client
−
Server
The binary signals transmit from the Ethernet interface of a device (Modbus client) to the Ethernet interface of
the SICAM I/O Unit 1 (Modbus server). Modbus TCP, Modbus UDP, or IEC 61850 is used as communication
protocol.
The signal for the relay module is being transmitted to the SICAM I/O Unit 1. Depending on the parameteriza-
tion, the relay contacts control the relay outputs. Therefore the parameterized indications correspond to the
switching states of the relays.
The SICAM I/O Unit 2 can be connected via the Ethernet switch to the SICAM I/O Unit 1. If using several
SICAM I/O Units, n × 6 binary inputs and n × 6 relay outputs can be used. If the integrated switch in the
SICAM I/O Unit is not used, the device can also be connected to systems control by using an external switch.
Additional hardware is required for this purpose. This may be necessary in the case of redundant operation.
Transmission Modbus Server
−
Modbus Client
(valid only at use of internal switches)
The transmission of binary signals from the SICAM I/O Units to the device also takes place via the integrated
Ethernet switch in the SICAM I/O Unit.
NOTE
The I/O expansion application can also be electric via serial communication (for example RS485 Bus System
7XV5103) or FO (for example Star Coupler 7XV5450) with Modbus RTU protocol.
MAN_SICAM_IO-Unit_7XV5673_US.book Page 41 Thursday, May 10, 2012 10:59 AM