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Communication
2.1 Communication Interfaces
2.1
Communication Interfaces
The communication interfaces of SICAM Q100 make 4 communication types possible using the corresponding
communication protocols:
•
Modbus TCP Server via Ethernet interface
•
Modbus RTU Master and Modbus RTU Slave via RS485 interface
•
Modbus TCP/RTU Gateway (Modbus Gateway)
•
IEC 61850 via Ethernet interface
NOTE
The Modbus specification with a detailed explanation of the Modbus protocol is provided in:
•
Modbus over Serial Line
Specification & Implementation Guide
http://www.modbus.org
•
Modbus Application Protocol Specification
http://www.modbus.org
•
Modbus Messaging on TCP/IP Implementation Guide
http://www.modbus.org
If parameterized accordingly, the device can communicate over the Ethernet interface and simultaneously over
the serial interface. It is possible, for example, to parameterize and retrieve data over the Ethernet interface,
while the serial interface handles the protocol traffic with a Modbus slave device.
2.1.1
Communication via Ethernet Interface
Via the Ethernet interface the following functions are supported:
•
Parameterization, analysis and diagnosis with HTML pages
•
DHCP (Dynamic Host Configuration Protocol) to assign the network configuration (IP address etc.) to
clients in an Ethernet network with DHCP server
•
Time synchronization via NTP
•
Data transfer to connected devices via Modbus TCP or IEC 61850-Server
•
Data transfer to SICAM PQS for fault record and power quality analysis
2.1.1.1 TCP/IP Protocol Stack
SICAM Q100 supports the following TCP/IP services:
•
TCP/IP IPv4
•
DHCP client (Dynamic Host Configuration Protocol)
•
NTP (Network Time Protocol)
•
HTTPS
•
SNMPv3 (Simple Network Management Protocol)
12
SICAM Q100, 7KG95xx, System Manual
E50417-C1040-C522-A8, Edition 09.2020
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