Siemens SICAM 7XV5673 Product Information page 23

9.2 I/O Expansion
Device
(System control with
Modbus TCP/UDP, or
IEC 61850)
Modbus client /
IEC 61850 client
Protection Device
with GOOSE
Figure 9-2 Acquisition and Output of Binary Signals with
Connection to the Control System via Modbus or
IEC 61850
The application for I/O expansion can also be realized
via serial communication (RS485 [RS485 - bus system
7XV5103] or optical [optical starcoupler 7XV5450]) with
an RTU Modbus
SICAM I/O Unit 7XV5673, Product Information
E50417-B1050-C484-A3, Edition: 03.2012
LAN/WLAN
Modbus TCP/
Modbus UDP/
IEC 61850
protocol.
SICAM I/O Unit 1
Modbus server /
IEC 61850 server
Relay
Indication
outputs
from Remote
Binary
inputs
SICAM I/O Unit 2
Modbus server /
IEC 61850 server
Indication
Relay
from Remote
outputs
Binary
inputs
SICAM I/O Unit n
Modbus server /
IEC 61850 server
23